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2.5x-20=-1.5+12
We move all terms to the left:
2.5x-20-(-1.5+12)=0
We add all the numbers together, and all the variables
2.5x-20-(10.5)=0
We add all the numbers together, and all the variables
2.5x-30.5=0
We move all terms containing x to the left, all other terms to the right
2.5x=30.5
x=30.5/2.5
x=12+0.5/2.5
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