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.50x+.15(70)=22.5
We move all terms to the left:
.50x+.15(70)-(22.5)=0
We add all the numbers together, and all the variables
.50x-22.343=0
We move all terms containing x to the left, all other terms to the right
.50x=22.343
x=22.343/.50
x=44+0.343/.50
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