-20d+1=-3d-18d+13

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Solution for -20d+1=-3d-18d+13 equation:


Simplifying
-20d + 1 = -3d + -18d + 13

Reorder the terms:
1 + -20d = -3d + -18d + 13

Reorder the terms:
1 + -20d = 13 + -3d + -18d

Combine like terms: -3d + -18d = -21d
1 + -20d = 13 + -21d

Solving
1 + -20d = 13 + -21d

Solving for variable 'd'.

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

Add '21d' to each side of the equation.
1 + -20d + 21d = 13 + -21d + 21d

Combine like terms: -20d + 21d = 1d
1 + 1d = 13 + -21d + 21d

Combine like terms: -21d + 21d = 0
1 + 1d = 13 + 0
1 + 1d = 13

Add '-1' to each side of the equation.
1 + -1 + 1d = 13 + -1

Combine like terms: 1 + -1 = 0
0 + 1d = 13 + -1
1d = 13 + -1

Combine like terms: 13 + -1 = 12
1d = 12

Divide each side by '1'.
d = 12

Simplifying
d = 12

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