4(5-4x)=100

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Solution for 4(5-4x)=100 equation: 



4(5-4x)=100

We move all terms to the left:

4(5-4x)-(100)=0

We add all the numbers together, and all the variables

4(-4x+5)-100=0

We multiply parentheses

-16x+20-100=0

We add all the numbers together, and all the variables

-16x-80=0

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

-16x=80

x=80/-16

x=-5

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