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.50x+.45(70)=47.5
We move all terms to the left:
.50x+.45(70)-(47.5)=0
We add all the numbers together, and all the variables
.50x-47.043=0
We move all terms containing x to the left, all other terms to the right
.50x=47.043
x=47.043/.50
x=94+0.043/.50
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