20-x+15+3x=90

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Solution for 20-x+15+3x=90 equation:



20-x+15+3x=90
We move all terms to the left:
20-x+15+3x-(90)=0
We add all the numbers together, and all the variables
2x-55=0
We move all terms containing x to the left, all other terms to the right
2x=55
x=55/2
x=27+1/2

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