13x+(10x-21)=90

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Solution for 13x+(10x-21)=90 equation: 



13x+(10x-21)=90

We move all terms to the left:

13x+(10x-21)-(90)=0

We get rid of parentheses

13x+10x-21-90=0

We add all the numbers together, and all the variables

23x-111=0

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

23x=111

x=111/23

x=4+19/23

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