-1=d-(-12)

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Solution for -1=d-(-12) equation:


Simplifying
-1 = d + -1(-12)

Multiply -1 * -12
-1 = d + 12

Reorder the terms:
-1 = 12 + d

Solving
-1 = 12 + d

Solving for variable 'd'.

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

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

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

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

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

Combine like terms: 12 + 1 = 13
-1d = 13

Divide each side by '-1'.
d = -13

Simplifying
d = -13

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