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0.80x-0.30(30+x)=0.70(30)
We move all terms to the left:
0.80x-0.30(30+x)-(0.70(30))=0
We add all the numbers together, and all the variables
0.80x-0.30(x+30)-(0.703)=0
We add all the numbers together, and all the variables
0.80x-0.30(x+30)-0.703=0
We multiply parentheses
0.80x-0.3x-9-0.703=0
We add all the numbers together, and all the variables
0.5x-9.703=0
We move all terms containing x to the left, all other terms to the right
0.5x=9.703
x=9.703/0.5
x=19+0.203/0.5
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