7x-21=14x-70

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Solution for 7x-21=14x-70 equation: 



7x-21=14x-70

We move all terms to the left:

7x-21-(14x-70)=0

We get rid of parentheses

7x-14x+70-21=0

We add all the numbers together, and all the variables

-7x+49=0

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

-7x=-49

x=-49/-7

x=+7

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