13x-8x+6=21

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Solution for 13x-8x+6=21 equation: 



13x-8x+6=21

We move all terms to the left:

13x-8x+6-(21)=0

We add all the numbers together, and all the variables

5x-15=0

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

5x=15

x=15/5

x=3

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