12x+16x-9-13=90

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Solution for 12x+16x-9-13=90 equation: 



12x+16x-9-13=90

We move all terms to the left:

12x+16x-9-13-(90)=0

We add all the numbers together, and all the variables

28x-112=0

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

28x=112

x=112/28

x=4

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