7x+9x-2x+3=21

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Solution for 7x+9x-2x+3=21 equation: 



7x+9x-2x+3=21

We move all terms to the left:

7x+9x-2x+3-(21)=0

We add all the numbers together, and all the variables

14x-18=0

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

14x=18

x=18/14

x=1+2/7

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