1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Igoryamba
3 years ago
15

Why does -30 - - 50 equal 20? What steps are being done?

Mathematics
2 answers:
12345 [234]3 years ago
7 0

Answer:

Step-by-step explain

1. 30-50=20

2. Two negatives equal a positive

So first you subtract 30 by 50 and get 20 then you look at the signs which are both negative. Meaning both of the negative signs become a positive. (-30)-(-50)=20

ale4655 [162]3 years ago
6 0
Two negatives equal a positive, so its just like subtracting 50 and 30, but your answer will be a positive.
You might be interested in
Compare adding unlike fractions and adding like fractions
muminat

Answer:

We just add numerators and rewrite denominator.

Adding unlike dominators:

We need to find the same denominators. You need to find the least common multiple (LCM) of the two denominators.

Step-by-step explanation:

You mean unlike denominators and like denominators.

Adding like dominators: We just add numerators and rewrite denominator :

Example : \frac{1}{4} +\frac{2}{4}=\frac{1+2}{4}  =\frac{3}{4}

Adding unlike dominators:

We need to find the same denominators. You need to find the least common multiple (LCM) of the two denominators.

For example :

\frac{1}{5}+\frac{3}{4}

LCM for 5 and 4 is 20 : Now, divide by 5 and multiply by 1 for first fraction. 20 divide by 4 and multiply by 3 :

\frac{1*4}{20} +\frac{3*5}{20}=\frac{4}{20} +\frac{15}{20}=\frac{19}{20}

4 0
3 years ago
Read 2 more answers
Explain how the identity property in the problem, 2/3 (1) = 1 (2/3) = 2/3, is the same with any rational number. ANSWER FAST PLE
Morgarella [4.7K]
First of all, the identity property of multiplication (which is what this is I'm assuming) is that the number 1 multiplied by any other number is that number itself. (An example would be 2 multiplied by 1, which would be two) So in this problem, this rule applies too, since 2/3 multiplied by 1 would be 2/3!

Hope this helped :)
7 0
3 years ago
Answer my question please now :L
LUCKY_DIMON [66]

Answer:kdkejtjejejbf he neendhejrhwh

4 0
2 years ago
Read 2 more answers
Four more than -3 times a number is equal to 8 more than -4 times the same number
postnew [5]

Answer:

The equation is 4 + ( − 3 x ) = 8 + ( − 4 x ) and the answer is x=4

Explanation:

Let us call the number  

x

and write our condition as:

4 + ( − 3 x ) = 8 + ( − 4 x )

rearranging: 4 x − 3 x = 8 − 4

x = 4

6 0
3 years ago
Here is the third problem:)
lesya [120]

Answer:

15.0

Step-by-step explanation:

we are finidng the adjacent angle, they have given us the opposite and the missing adjacent side so we use tan

tan25=7/x

since x is at the bottom then switch

x= 7/tan25

x= 15. 012

6 0
3 years ago
Read 2 more answers
Other questions:
  • John spent $75 on a shopping trip for new clothes last week. He had expected to spend $100 on clothes. How much was the error in
    6·2 answers
  • Help pls!!! Indirect proofs?? probably super easy I just don't understand how to do
    13·1 answer
  • What is the square root of 73
    6·1 answer
  • Joe"s Age Is three times Aaron's age and Aaron is six years older than Christina if the sum of their ages is 149 what is Christi
    7·1 answer
  • Use the elimination method to solve the system of equations. Choose the
    8·1 answer
  • How do u rename on the hour? What does on the hour mean?? Plz help guys I really would appreciate it I will give u 43 points if
    15·2 answers
  • Simplify (*x* +2x? - 5x)+(-3x + x +1)+(3+* + 2x).
    8·2 answers
  • Is 6 2/3 greater or less than 6 12/15
    7·1 answer
  • Select Proportional or Not Proportional to correctly classify each pair of ratios.
    15·2 answers
  • Write and solve the inequality.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!