X+3x+20=220

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Solution for X+3x+20=220 equation: 



X+3X+20=220

We move all terms to the left:

X+3X+20-(220)=0

We add all the numbers together, and all the variables

4X-200=0

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

4X=200

X=200/4

X=50

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