9x-7=21

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Solution for 9x-7=21 equation:



9x-7=21
We move all terms to the left:
9x-7-(21)=0
We add all the numbers together, and all the variables
9x-28=0
We move all terms containing x to the left, all other terms to the right
9x=28
x=28/9
x=3+1/9

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