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0.9(5-2v) + 0.6(2.5v-4)=0
We simplify the equation to the form, which is simple to understand
0.9(5-2v) + 0.6(2.5v-4)=0
Reorder the terms in parentheses
+(+4.5-1.8v) + 0.6*(2.5v-4)=0
Remove unnecessary parentheses
+4.5-1.8v + 0.6+*(+2.5v-4+)=0
Reorder the terms in parentheses
+4.5-1.8v+(+1.5v-2.4)=0
Remove unnecessary parentheses
+4.5-1.8v+1.5v-2.4=0
We move all terms containing v to the left and all other terms to the right.
-1.8v+1.5v=0-4.5+2.4
We simplify left and right side of the equation.
-0.3v=-2.1
We divide both sides of the equation by -0.3 to get v.
v=7
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