40=-3(3x+10)+7

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Solution for 40=-3(3x+10)+7 equation: 



40=-3(3x+10)+7

We move all terms to the left:

40-(-3(3x+10)+7)=0



We calculate terms in parentheses: -(-3(3x+10)+7), so:

-3(3x+10)+7

We multiply parentheses

-9x-30+7

We add all the numbers together, and all the variables

-9x-23

Back to the equation:

-(-9x-23)



We get rid of parentheses

9x+23+40=0

We add all the numbers together, and all the variables

9x+63=0

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

9x=-63

x=-63/9

x=-7

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