7x+35=9x+21

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Solution for 7x+35=9x+21 equation: 



7x+35=9x+21

We move all terms to the left:

7x+35-(9x+21)=0

We get rid of parentheses

7x-9x-21+35=0

We add all the numbers together, and all the variables

-2x+14=0

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

-2x=-14

x=-14/-2

x=+7

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