-d=4(d+20)+15

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Solution for -d=4(d+20)+15 equation:


Simplifying
-1d = 4(d + 20) + 15

Reorder the terms:
-1d = 4(20 + d) + 15
-1d = (20 * 4 + d * 4) + 15
-1d = (80 + 4d) + 15

Reorder the terms:
-1d = 80 + 15 + 4d

Combine like terms: 80 + 15 = 95
-1d = 95 + 4d

Solving
-1d = 95 + 4d

Solving for variable 'd'.

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

Add '-4d' to each side of the equation.
-1d + -4d = 95 + 4d + -4d

Combine like terms: -1d + -4d = -5d
-5d = 95 + 4d + -4d

Combine like terms: 4d + -4d = 0
-5d = 95 + 0
-5d = 95

Divide each side by '-5'.
d = -19

Simplifying
d = -19

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