4(x+7x)=128

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Solution for 4(x+7x)=128 equation: 



4(x+7x)=128

We move all terms to the left:

4(x+7x)-(128)=0

We add all the numbers together, and all the variables

4(+8x)-128=0

We multiply parentheses

32x-128=0

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

32x=128

x=128/32

x=4

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