-40(5-x)=4(x+31)

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Solution for -40(5-x)=4(x+31) equation: 



-40(5-x)=4(x+31)

We move all terms to the left:

-40(5-x)-(4(x+31))=0

We add all the numbers together, and all the variables

-40(-1x+5)-(4(x+31))=0

We multiply parentheses

40x-(4(x+31))-200=0



We calculate terms in parentheses: -(4(x+31)), so:

4(x+31)

We multiply parentheses

4x+124

Back to the equation:

-(4x+124)



We get rid of parentheses

40x-4x-124-200=0

We add all the numbers together, and all the variables

36x-324=0

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

36x=324

x=324/36

x=9

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