-7(x+1)-x-12=-8(x+5)+21

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Solution for -7(x+1)-x-12=-8(x+5)+21 equation: 



-7(x+1)-x-12=-8(x+5)+21

We move all terms to the left:

-7(x+1)-x-12-(-8(x+5)+21)=0

We add all the numbers together, and all the variables

-1x-7(x+1)-(-8(x+5)+21)-12=0

We multiply parentheses

-1x-7x-(-8(x+5)+21)-7-12=0



We calculate terms in parentheses: -(-8(x+5)+21), so:

-8(x+5)+21

We multiply parentheses

-8x-40+21

We add all the numbers together, and all the variables

-8x-19

Back to the equation:

-(-8x-19)



We add all the numbers together, and all the variables

-8x-(-8x-19)-19=0

We get rid of parentheses

-8x+8x+19-19=0

We add all the numbers together, and all the variables

=0

x=0/1

x=0

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