42=12d-7

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Solution for 42=12d-7 equation:


Simplifying
42 = 12d + -7

Reorder the terms:
42 = -7 + 12d

Solving
42 = -7 + 12d

Solving for variable 'd'.

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

Add '-12d' to each side of the equation.
42 + -12d = -7 + 12d + -12d

Combine like terms: 12d + -12d = 0
42 + -12d = -7 + 0
42 + -12d = -7

Add '-42' to each side of the equation.
42 + -42 + -12d = -7 + -42

Combine like terms: 42 + -42 = 0
0 + -12d = -7 + -42
-12d = -7 + -42

Combine like terms: -7 + -42 = -49
-12d = -49

Divide each side by '-12'.
d = 4.083333333

Simplifying
d = 4.083333333

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