7=3(x+1)+4(x-1)

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Solution for 7=3(x+1)+4(x-1) equation: 



7=3(x+1)+4(x-1)

We move all terms to the left:

7-(3(x+1)+4(x-1))=0



We calculate terms in parentheses: -(3(x+1)+4(x-1)), so:

3(x+1)+4(x-1)

We multiply parentheses

3x+4x+3-4

We add all the numbers together, and all the variables

7x-1

Back to the equation:

-(7x-1)



We get rid of parentheses

-7x+1+7=0

We add all the numbers together, and all the variables

-7x+8=0

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

-7x=-8

x=-8/-7

x=1+1/7

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