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.5x+.15(70)=31.5
We move all terms to the left:
.5x+.15(70)-(31.5)=0
We add all the numbers together, and all the variables
.5x-31.343=0
We move all terms containing x to the left, all other terms to the right
.5x=31.343
x=31.343/.5
x=62+0.343/.5
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