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10(2.1q-2)+(7.5q+19)=0
We simplify the equation to the form, which is simple to understand
10(2.1q-2)+(7.5q+19)=0
Reorder the terms in parentheses
+(+21q-20)+(7.5q+19)=0
Remove unnecessary parentheses
+21q-20+(+7.5q+19+)=0
Remove unnecessary parentheses
+21q-20+7.5q+19=0
We move all terms containing q to the left and all other terms to the right.
+21q+7.5q=0+20-19
We simplify left and right side of the equation.
+28.5q=+1
We divide both sides of the equation by 28.5 to get q.
q=0.035087719298246
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