3d-1=4d-20

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Solution for 3d-1=4d-20 equation:


Simplifying
3d + -1 = 4d + -20

Reorder the terms:
-1 + 3d = 4d + -20

Reorder the terms:
-1 + 3d = -20 + 4d

Solving
-1 + 3d = -20 + 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.
-1 + 3d + -4d = -20 + 4d + -4d

Combine like terms: 3d + -4d = -1d
-1 + -1d = -20 + 4d + -4d

Combine like terms: 4d + -4d = 0
-1 + -1d = -20 + 0
-1 + -1d = -20

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

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

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

Divide each side by '-1'.
d = 19

Simplifying
d = 19

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