7(2x+-1)+21=7x-14

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Solution for 7(2x+-1)+21=7x-14 equation: 



7(2x+-1)+21=7x-14

We move all terms to the left:

7(2x+-1)+21-(7x-14)=0

We add all the numbers together, and all the variables

7(2x-1)-(7x-14)+21=0

We multiply parentheses

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

We get rid of parentheses

14x-7x+14-7+21=0

We add all the numbers together, and all the variables

7x+28=0

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

7x=-28

x=-28/7

x=-4

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