x=120-4x

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Solution for x=120-4x equation:



x=120-4x
We move all terms to the left:
x-(120-4x)=0
We add all the numbers together, and all the variables
x-(-4x+120)=0
We get rid of parentheses
x+4x-120=0
We add all the numbers together, and all the variables
5x-120=0
We move all terms containing x to the left, all other terms to the right
5x=120
x=120/5
x=24

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