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.50x+.15(30)=27.5
We move all terms to the left:
.50x+.15(30)-(27.5)=0
We add all the numbers together, and all the variables
.50x-27.347=0
We move all terms containing x to the left, all other terms to the right
.50x=27.347
x=27.347/.50
x=54+0.347/.50
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