3x-9=x+7=90

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Solution for 3x-9=x+7=90 equation:



3x-9=x+7=90
We move all terms to the left:
3x-9-(x+7)=0
We get rid of parentheses
3x-x-7-9=0
We add all the numbers together, and all the variables
2x-16=0
We move all terms containing x to the left, all other terms to the right
2x=16
x=16/2
x=8

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