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3 years ago

−15x−40=23−8x What does x =

Mathematics

2 answers:

Dima020 [189]3 years ago

8 0

Answer:

x = -9

Step-by-step explanation:

-15x - 40 = 23 - 8x

Add 8x to both sides

-15x + 8x - 40 = 23

-7x - 40 = 23

Add 40 to both sides

- 7x = 23 + 40

-7x = 63

Divide both sides by (-7)

x = 63/-7

x = -9

Nastasia [14]3 years ago

6 0

Answer:

x = -9

Step-by-step explanation:

-15x - 40 = 23 - 8x

add 8x to both sides to bring -8x to the left side

-15x + 8x - 40 = 23

add 40 to both sides to bring -40 to the right side

-15x + 8x = 23 + 40

add the common terms

-7x = 63

for x to be alone divide -7 to both sides

x = -9

I hope this helped!

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