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0.4x+1.18=3.1(2-0.01x)
We move all terms to the left:
0.4x+1.18-(3.1(2-0.01x))=0
We add all the numbers together, and all the variables
0.4x-(3.1(-0.01x+2))+1.18=0
We calculate terms in parentheses: -(3.1(-0.01x+2)), so:We get rid of parentheses
3.1(-0.01x+2)
We multiply parentheses
0x+6.2
We add all the numbers together, and all the variables
x+6.2
Back to the equation:
-(x+6.2)
0.4x-x-6.2+1.18=0
We add all the numbers together, and all the variables
-0.6x-5.02=0
We move all terms containing x to the left, all other terms to the right
-0.6x=5.02
x=5.02/-0.6
x=-8+0.22/0.6
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