x+4*x=128

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Solution for x+4*x=128 equation: 



x+4x=128

We move all terms to the left:

x+4x-(128)=0

We add all the numbers together, and all the variables

5x-128=0

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

5x=128

x=128/5

x=25+3/5

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