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0.1x + 0.03(7-x)=0.05(7)
We simplify the equation to the form, which is simple to understand
0.1x + 0.03(7-x)=0.05(7)
Reorder the terms in parentheses
0.1x+( + 0.21-0.03x)=0.05*(7)
Remove unnecessary parentheses
+ 0.1x + 0.21-0.03x=0.05+*(+7+)
Reorder the terms in parentheses
0.1x + 0.21-0.03x=+( + 0.35)
Remove unnecessary parentheses
+ 0.1x + 0.21-0.03x=0.35
We move all terms containing x to the left and all other terms to the right.
+ 0.1x-0.03x=0.35-0.21
We simplify left and right side of the equation.
+ 0.07x=0.14
We divide both sides of the equation by 0.07 to get x.
x=2
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