19d+20=-4(-5d-2)

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Solution for 19d+20=-4(-5d-2) equation:


Simplifying
19d + 20 = -4(-5d + -2)

Reorder the terms:
20 + 19d = -4(-5d + -2)

Reorder the terms:
20 + 19d = -4(-2 + -5d)
20 + 19d = (-2 * -4 + -5d * -4)
20 + 19d = (8 + 20d)

Solving
20 + 19d = 8 + 20d

Solving for variable 'd'.

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

Add '-20d' to each side of the equation.
20 + 19d + -20d = 8 + 20d + -20d

Combine like terms: 19d + -20d = -1d
20 + -1d = 8 + 20d + -20d

Combine like terms: 20d + -20d = 0
20 + -1d = 8 + 0
20 + -1d = 8

Add '-20' to each side of the equation.
20 + -20 + -1d = 8 + -20

Combine like terms: 20 + -20 = 0
0 + -1d = 8 + -20
-1d = 8 + -20

Combine like terms: 8 + -20 = -12
-1d = -12

Divide each side by '-1'.
d = 12

Simplifying
d = 12

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