13x-(7x-4)=40

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Solution for 13x-(7x-4)=40 equation: 



13x-(7x-4)=40

We move all terms to the left:

13x-(7x-4)-(40)=0

We get rid of parentheses

13x-7x+4-40=0

We add all the numbers together, and all the variables

6x-36=0

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

6x=36

x=36/6

x=6

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