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
quester [9]
3 years ago
5

-7=21+x help please thankyou

Mathematics
2 answers:
serg [7]3 years ago
4 0
Move the 21 to the other side and change the sign

-7-21=x
x=-28

hope this helps
Readme [11.4K]3 years ago
4 0
Subtract 21 on both sides.

-7-21=21-21+x
-7-21=x
x=-28

You might be interested in
How to find the discounted price example $25.00 is the original price and the discount is 15%
Alexandra [31]
Since the price is now 15% less you would first find what 15% of 25 is  by using 25*.15 and get 3.25  then you subtract that from 25 and get 25-3.25=                     $21.75
3 0
3 years ago
Subtract 5x²-7x-6 from<br> 9x² + 3x-4
Kobotan [32]

Answer:

the answer is 4 x ^2 + 10 x + 2

Step-by-step explanation:

hope this helps you out :) plz mark brainiest

7 0
3 years ago
Ann increased the quantities of all the ingredients in a recipe by 60\%60%60, percent. She used 808080 grams (\text{g})(g)left p
kari74 [83]

Answer:

50 grams

Step-by-step explanation:

Let the amount of cheese required by the recipe be "x"

Ann increased 60% from original amount and then used up 80 grams. Thus:

<em>Original, increased by 60%, became 80</em>

<em />

This translated to algebraic equation would be:

x + 0.6x = 80

<u>Note:</u>  60% = 60/100 = 0.6

So we can solve the above equation for "x" and get our answer. Shown below:

x + 0.6x = 80\\1.6x=80\\x=\frac{80}{1.6}\\x=50

Hence,

the recipe required 50 grams of cheese

6 0
3 years ago
Solve for e.<br><br> 4/3=-6e-5/3
cricket20 [7]

Answer:

e = 1/2

Step-by-step explanation:

to solve foe e in  this 4/3=-6e-5/3

solution

4/3=-6e-5/3

4/3 + 5/3 = 6e

find the lcm of the left hand side

4 + 5/3 = 6e

9/3 = 6e

cross multiply

3 x 6e = 9 x 1

18e = 9

divide both sides by the coefficient of e which is 18

18e /18 = 9/18

e = 1/2

therefore the value of e in the expression above is evaluated to be equals to 1/2

5 0
3 years ago
Allowing 20% discount on the marked price. of 아 a watch, the value of the watch will be Rs. 2378. If the VAT of 10% is added, fi
Harrizon [31]

Answer:

The marked price of the watch is $2,702.27.

Step-by-step explanation:

Since allowing 20% discount on the marked price of a watch, the value of the watch will be Rs. 2378, to determine, if the VAT of 10% is added, it's marked price, the following calculation must be performed:

1 - 0.2 = 0.8

0.8 x 1.1 = 2378

0.88 = 2378

0.88 = 2378

0.8 = X

0.8 x 2378 / 0.88 = X

1,902.4 / 0.88 = X

2,161.81 = X

0.8 = 2,161.81

1 = X

2,161.81 / 0.8 = X

2,702.27 = X

Therefore, the marked price of the watch is 2,702.27.

4 0
2 years ago
Other questions:
  • WILL MAKE BRAINLIEST!
    7·1 answer
  • P: grass is green or Q: 3 is the square root of 10 (P ∨ Q)
    7·2 answers
  • An ordinary deck of playing cards has 52 cards. There are four suits spades, hearts, diamonds, and clubs, with 13 cards in each
    14·1 answer
  • Members of the Wide Water Club pay $105 per summer season, plus $9.50 each they rent a boat. Nonmembers must pay $14.75 each tim
    9·1 answer
  • The Chambers family has a net monthly income of $6,500.
    8·2 answers
  • Explain why sin^-1(sin(3pi/4))=/=3pi/4 when y=sin x and y=sin^-1 x are inverses.
    8·2 answers
  • X - 3(2x - 7) = 76<br> Help!
    12·2 answers
  • A flag has a total area of 42 square feet.
    9·2 answers
  • .............................
    7·2 answers
  • Please help me with this problem!!! No Links!
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!