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0.4+8(400-a)=0.48(400)
We simplify the equation to the form, which is simple to understand
0.4+8(400-a)=0.48(400)
Reorder the terms in parentheses
0.4+(+3200-8a)=0.48*(400)
Remove unnecessary parentheses
+ 0.4+3200-8a=0.48+*(+400+)
Reorder the terms in parentheses
0.4+3200-8a=+(+192)
Remove unnecessary parentheses
+ 0.4+3200-8a=+192
We move all terms containing a to the left and all other terms to the right.
-8a=+192-0.4-3200
We simplify left and right side of the equation.
-8a=-3008.4
We divide both sides of the equation by -8 to get a.
a=376.05
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