1040=8(21+x)

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Solution for 1040=8(21+x) equation: 



1040=8(21+x)

We move all terms to the left:

1040-(8(21+x))=0

We add all the numbers together, and all the variables

-(8(x+21))+1040=0



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

8(x+21)

We multiply parentheses

8x+168

Back to the equation:

-(8x+168)



We get rid of parentheses

-8x-168+1040=0

We add all the numbers together, and all the variables

-8x+872=0

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

-8x=-872

x=-872/-8

x=+109

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