7+9x=21

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Solution for 7+9x=21 equation:



7+9x=21
We move all terms to the left:
7+9x-(21)=0
We add all the numbers together, and all the variables
9x-14=0
We move all terms containing x to the left, all other terms to the right
9x=14
x=14/9
x=1+5/9

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