-42d+-12=-642

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Solution for -42d+-12=-642 equation: 


Simplifying
-42d + -12 = -642

Reorder the terms:
-12 + -42d = -642

Solving
-12 + -42d = -642

Solving for variable 'd'.

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

Add '12' to each side of the equation.
-12 + 12 + -42d = -642 + 12

Combine like terms: -12 + 12 = 0
0 + -42d = -642 + 12
-42d = -642 + 12

Combine like terms: -642 + 12 = -630
-42d = -630

Divide each side by '-42'.
d = 15

Simplifying
d = 15

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