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0.4(10x+15)=4.5(0.2x+5)
We move all terms to the left:
0.4(10x+15)-(4.5(0.2x+5))=0
We multiply parentheses
4x-(4.5(0.2x+5))+6=0
We calculate terms in parentheses: -(4.5(0.2x+5)), so:We get rid of parentheses
4.5(0.2x+5)
We multiply parentheses
0x+22.5
We add all the numbers together, and all the variables
x+22.5
Back to the equation:
-(x+22.5)
4x-x-22.5+6=0
We add all the numbers together, and all the variables
3x-16.5=0
We move all terms containing x to the left, all other terms to the right
3x=16.5
x=16.5/3
x=5+1/2
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