2x-21+3x-4=90

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Solution for 2x-21+3x-4=90 equation: 



2x-21+3x-4=90

We move all terms to the left:

2x-21+3x-4-(90)=0

We add all the numbers together, and all the variables

5x-115=0

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

5x=115

x=115/5

x=23

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