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3x+12=8x-59
We move all terms to the left:
3x+12-(8x-59)=0
We get rid of parentheses
3x-8x+59+12=0
We add all the numbers together, and all the variables
-5x+71=0
We move all terms containing x to the left, all other terms to the right
-5x=-71
x=-71/-5
x=14+1/5
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