18=-(-6a+5)-7(a-4)

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Solution for 18=-(-6a+5)-7(a-4) equation: 



18=-(-6a+5)-7(a-4)

We move all terms to the left:

18-(-(-6a+5)-7(a-4))=0



We calculate terms in parentheses: -(-(-6a+5)-7(a-4)), so:

-(-6a+5)-7(a-4)

We multiply parentheses

-(-6a+5)-7a+28

We get rid of parentheses

6a-7a-5+28

We add all the numbers together, and all the variables

-1a+23

Back to the equation:

-(-1a+23)



We get rid of parentheses

1a-23+18=0

We add all the numbers together, and all the variables

a-5=0

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

a=5

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