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4.3x+7.1=0.3(8x+30)
We move all terms to the left:
4.3x+7.1-(0.3(8x+30))=0
We calculate terms in parentheses: -(0.3(8x+30)), so:We get rid of parentheses
0.3(8x+30)
We multiply parentheses
2.4x+9
Back to the equation:
-(2.4x+9)
4.3x-2.4x-9+7.1=0
We add all the numbers together, and all the variables
1.9x-1.9=0
We move all terms containing x to the left, all other terms to the right
1.9x=1.9
x=1.9/1.9
x=1
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