12x-21=8x-45

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Solution for 12x-21=8x-45 equation:



12x-21=8x-45
We move all terms to the left:
12x-21-(8x-45)=0
We get rid of parentheses
12x-8x+45-21=0
We add all the numbers together, and all the variables
4x+24=0
We move all terms containing x to the left, all other terms to the right
4x=-24
x=-24/4
x=-6

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