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-(d/7)=-13
We simplify the equation to the form, which is simple to understand
-(d/7)=-13
Simplifying:
-( + 0.142857142857d)=-13
Remove unnecessary parentheses
-0.142857142857d=-13
We move all terms containing d to the left and all other terms to the right.
-0.142857142857d=-13
We simplify left and right side of the equation.
-0.142857142857d=-13
We divide both sides of the equation by -0.142857142857 to get d.
d=91.0000000001
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