4d+5d-7=20

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Solution for 4d+5d-7=20 equation:


4d+5d-7=20

We simplify the equation to the form, which is simple to understand 
4d+5d-7=20

We move all terms containing d to the left and all other terms to the right. 
+4d+5d=+20+7

We simplify left and right side of the equation. 
+9d=+27

We divide both sides of the equation by 9 to get d. 
d=3

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