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10x-15=-8+21
We move all terms to the left:
10x-15-(-8+21)=0
We add all the numbers together, and all the variables
10x-15-13=0
We add all the numbers together, and all the variables
10x-28=0
We move all terms containing x to the left, all other terms to the right
10x=28
x=28/10
x=2+4/5
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