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goldfiish [28.3K]
3 years ago
9

Introduction to addition or subtraction of fractions with different denominator 3/5+1/3

Mathematics
1 answer:
Anon25 [30]3 years ago
6 0
You must find the same denominator by finding the closest common factor of both.
In this case it would be 15 because both 5 and 3 go into 15.
You then have to multiply the numerator by the number you multiplied to get the denominator.
So you multiply
Nevermind just look at the pic.
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Return to the original problem. PEMDAS says to multiply before adding. But could you have performed a different operation and st
Brrunno [24]

Answer:

no

Step-by-step explanation:

Because PEMDAS is something you MUST follow no matter WHAT!!!!!!!!

Period pooo

3 0
3 years ago
-20 = -4x - 6x<br> I need help solving it
eduard

Answer:

the answer is 2

Step-by-step explanation:

add -4x and -6x and the answer is -10x bc they are both negative x. then divide both -10x and -20 by -10 so that it is x by itself on one side and 2 on the other so its 2=x :)

6 0
3 years ago
Which equation does NOT represent y as a quadratic function of x?
ad-work [718]

Answer:

B. y-x=2y+16

Step-by-step explanation:

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6 0
3 years ago
I need help with both of these
jeka57 [31]

Answer:

  1. 13x² - 19x + 23
  2. -16x +17

Step-by-step explanation:

1 . (4x² - 9x + 16) + (7 + 9x² - 10x)

4x² - 9x + 16 + 7 + 9x² - 10x

13x² - 19x + 23

2 . (-2x + 6) - (14x - 11)

-2x + 6 - 14x + 11

-16x +17

8 0
3 years ago
The sum of the digits of a two-digit number is 9. If the digits are reversed,the new number is 9 more than the original number.F
hodyreva [135]

Answer:

45

Step-by-step explanation:

Let the original number be xy where y is unit and x is tens hence original number is 10x+y When reversed, the new number is yz hence 10y+x

We know that the original number plus 9 is the reversed number hence

10x+y+9=10y+x

9y-9x=9 which when simplified we obtain that

y-x=1 equation 1

Originally, we are told that the sum of x and y is 9 hence

y+x=9 equation 2

Solving equation 1, it means y=x+1

Substituting the above into equation 2

x+1+x=9

2x=9-1

2x=8

x=8/2=4

Since y=x+1 then y=4+1=5

Therefore, the original number, xy is 45

4 0
3 years ago
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