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.50x+0.15(70)=37.5
We move all terms to the left:
.50x+0.15(70)-(37.5)=0
We add all the numbers together, and all the variables
.50x-37.343=0
We move all terms containing x to the left, all other terms to the right
.50x=37.343
x=37.343/.50
x=74+0.343/.50
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