2d=4d-42

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Solution for 2d=4d-42 equation: 


Simplifying
2d = 4d + -42

Reorder the terms:
2d = -42 + 4d

Solving
2d = -42 + 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.
2d + -4d = -42 + 4d + -4d

Combine like terms: 2d + -4d = -2d
-2d = -42 + 4d + -4d

Combine like terms: 4d + -4d = 0
-2d = -42 + 0
-2d = -42

Divide each side by '-2'.
d = 21

Simplifying
d = 21

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