20+20d=-12+16d-20

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Solution for 20+20d=-12+16d-20 equation:


Simplifying
20 + 20d = -12 + 16d + -20

Reorder the terms:
20 + 20d = -12 + -20 + 16d

Combine like terms: -12 + -20 = -32
20 + 20d = -32 + 16d

Solving
20 + 20d = -32 + 16d

Solving for variable 'd'.

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

Add '-16d' to each side of the equation.
20 + 20d + -16d = -32 + 16d + -16d

Combine like terms: 20d + -16d = 4d
20 + 4d = -32 + 16d + -16d

Combine like terms: 16d + -16d = 0
20 + 4d = -32 + 0
20 + 4d = -32

Add '-20' to each side of the equation.
20 + -20 + 4d = -32 + -20

Combine like terms: 20 + -20 = 0
0 + 4d = -32 + -20
4d = -32 + -20

Combine like terms: -32 + -20 = -52
4d = -52

Divide each side by '4'.
d = -13

Simplifying
d = -13

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