-5(4-2a)=-100

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Solution for -5(4-2a)=-100 equation: 



-5(4-2a)=-100

We move all terms to the left:

-5(4-2a)-(-100)=0

We add all the numbers together, and all the variables

-5(-2a+4)-(-100)=0

We add all the numbers together, and all the variables

-5(-2a+4)+100=0

We multiply parentheses

10a-20+100=0

We add all the numbers together, and all the variables

10a+80=0

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

10a=-80

a=-80/10

a=-8

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