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20(x*0.5)=10(x*0.7)
We move all terms to the left:
20(x*0.5)-(10(x*0.7))=0
We add all the numbers together, and all the variables
20(+x*0.5)-(10(+x*0.7))=0
We multiply parentheses
10x-(10(+x*0.7))=0
We calculate terms in parentheses: -(10(+x*0.7)), so:We add all the numbers together, and all the variables
10(+x*0.7)
We multiply parentheses
7x
Back to the equation:
-(7x)
3x=0
x=0/3
x=0
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