-12=3-d

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Solution for -12=3-d equation:


Simplifying
-12 = 3 + -1d

Solving
-12 = 3 + -1d

Solving for variable 'd'.

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

Add 'd' to each side of the equation.
-12 + d = 3 + -1d + d

Combine like terms: -1d + d = 0
-12 + d = 3 + 0
-12 + d = 3

Add '12' to each side of the equation.
-12 + 12 + d = 3 + 12

Combine like terms: -12 + 12 = 0
0 + d = 3 + 12
d = 3 + 12

Combine like terms: 3 + 12 = 15
d = 15

Simplifying
d = 15

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