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.20x+.25(70)=33.5
We move all terms to the left:
.20x+.25(70)-(33.5)=0
We add all the numbers together, and all the variables
.20x-33.243=0
We move all terms containing x to the left, all other terms to the right
.20x=33.243
x=33.243/.20
x=166+0.042999999999999/.20
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