-20-4d=-3(5d-7)

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Solution for -20-4d=-3(5d-7) equation:


Simplifying
-20 + -4d = -3(5d + -7)

Reorder the terms:
-20 + -4d = -3(-7 + 5d)
-20 + -4d = (-7 * -3 + 5d * -3)
-20 + -4d = (21 + -15d)

Solving
-20 + -4d = 21 + -15d

Solving for variable 'd'.

Move all terms containing d to the left, all other terms to the right.

Add '15d' to each side of the equation.
-20 + -4d + 15d = 21 + -15d + 15d

Combine like terms: -4d + 15d = 11d
-20 + 11d = 21 + -15d + 15d

Combine like terms: -15d + 15d = 0
-20 + 11d = 21 + 0
-20 + 11d = 21

Add '20' to each side of the equation.
-20 + 20 + 11d = 21 + 20

Combine like terms: -20 + 20 = 0
0 + 11d = 21 + 20
11d = 21 + 20

Combine like terms: 21 + 20 = 41
11d = 41

Divide each side by '11'.
d = 3.727272727

Simplifying
d = 3.727272727

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