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7d-12=38
We simplify the equation to the form, which is simple to understand
7d-12=38
We move all terms containing d to the left and all other terms to the right.
+7d=+38+12
We simplify left and right side of the equation.
+7d=+50
We divide both sides of the equation by 7 to get d.
d=7.14285714286
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