9x+21=2x-49

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Solution for 9x+21=2x-49 equation: 



9x+21=2x-49

We move all terms to the left:

9x+21-(2x-49)=0

We get rid of parentheses

9x-2x+49+21=0

We add all the numbers together, and all the variables

7x+70=0

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

7x=-70

x=-70/7

x=-10

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