4(10-x)-81=-9

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Solution for 4(10-x)-81=-9 equation: 



4(10-x)-81=-9

We move all terms to the left:

4(10-x)-81-(-9)=0

We add all the numbers together, and all the variables

4(-1x+10)-81-(-9)=0

We add all the numbers together, and all the variables

4(-1x+10)-72=0

We multiply parentheses

-4x+40-72=0

We add all the numbers together, and all the variables

-4x-32=0

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

-4x=32

x=32/-4

x=-8

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