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myrzilka [38]
2 years ago
11

Solve for x: 9x – 7 = 5x + 21

Mathematics
2 answers:
denis23 [38]2 years ago
8 0

Answer:

x=7

Step-by-step explanation:

add 7 to both sides

9x=5x+28

subtract 5x from both sides

4x=28

divide both sides by 4

x=7

tiny-mole [99]2 years ago
4 0

Answer:

X=7

Step-by-step explanation:

So first you want x on one side so you so subtract 5x from both sides

Then your equation is 4x-7=21

Because you want x by itself, you add 7 to each side because of additive inverse

The equation is now 4x=28

The last step is to divide 4 from each side and that leaves us with 7

x=7

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