4(5+4x)-4=80

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Solution for 4(5+4x)-4=80 equation: 



4(5+4x)-4=80

We move all terms to the left:

4(5+4x)-4-(80)=0

We add all the numbers together, and all the variables

4(4x+5)-4-80=0

We add all the numbers together, and all the variables

4(4x+5)-84=0

We multiply parentheses

16x+20-84=0

We add all the numbers together, and all the variables

16x-64=0

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

16x=64

x=64/16

x=4

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