81+2x=90

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Solution for 81+2x=90 equation: 



81+2x=90

We move all terms to the left:

81+2x-(90)=0

We add all the numbers together, and all the variables

2x-9=0

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

2x=9

x=9/2

x=4+1/2

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