9x-7=7x-49

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Solution for 9x-7=7x-49 equation: 



9x-7=7x-49

We move all terms to the left:

9x-7-(7x-49)=0

We get rid of parentheses

9x-7x+49-7=0

We add all the numbers together, and all the variables

2x+42=0

We move all terms containing x to the left, all other terms to the right

2x=-42

x=-42/2

x=-21

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