7(7+x+3)=8(8+x)

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Solution for 7(7+x+3)=8(8+x) equation: 



7(7+x+3)=8(8+x)

We move all terms to the left:

7(7+x+3)-(8(8+x))=0

We add all the numbers together, and all the variables

7(x+10)-(8(x+8))=0

We multiply parentheses

7x-(8(x+8))+70=0



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

8(x+8)

We multiply parentheses

8x+64

Back to the equation:

-(8x+64)



We get rid of parentheses

7x-8x-64+70=0

We add all the numbers together, and all the variables

-1x+6=0

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

-x=-6

x=-6/-1

x=+6

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