9y-4y-7=86.90

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Solution for 9y-4y-7=86.90 equation:


9y-4y-7=86.90

We simplify the equation to the form, which is simple to understand 
9y-4y-7=86.90

We move all terms containing y to the left and all other terms to the right. 
+9y-4y=+86.9+7

We simplify left and right side of the equation. 
+5y=+93.9

We divide both sides of the equation by 5 to get y. 
y=18.78

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