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0.21-0.03(x+1)=-0.2(1-x)
We move all terms to the left:
0.21-0.03(x+1)-(-0.2(1-x))=0
We add all the numbers together, and all the variables
-0.03(x+1)-(-0.2(-1x+1))+0.21=0
We multiply parentheses
-0.03x-(-0.2(-1x+1))-0.03+0.21=0
We calculate terms in parentheses: -(-0.2(-1x+1)), so:We add all the numbers together, and all the variables
-0.2(-1x+1)
We multiply parentheses
0.2x-0.2
Back to the equation:
-(0.2x-0.2)
-0.03x-(0.2x-0.2)+0.18=0
We get rid of parentheses
-0.03x-0.2x+0.2+0.18=0
We add all the numbers together, and all the variables
-0.23x+0.38=0
We move all terms containing x to the left, all other terms to the right
-0.23x=-0.38
x=-0.38/-0.23
x=1+0.15/0.23
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