20+d=4d-13

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Solution for 20+d=4d-13 equation:


Simplifying
20 + d = 4d + -13

Reorder the terms:
20 + d = -13 + 4d

Solving
20 + d = -13 + 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.
20 + d + -4d = -13 + 4d + -4d

Combine like terms: d + -4d = -3d
20 + -3d = -13 + 4d + -4d

Combine like terms: 4d + -4d = 0
20 + -3d = -13 + 0
20 + -3d = -13

Add '-20' to each side of the equation.
20 + -20 + -3d = -13 + -20

Combine like terms: 20 + -20 = 0
0 + -3d = -13 + -20
-3d = -13 + -20

Combine like terms: -13 + -20 = -33
-3d = -33

Divide each side by '-3'.
d = 11

Simplifying
d = 11

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