15-d=3-15

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Solution for 15-d=3-15 equation:


Simplifying
15 + -1d = 3 + -15

Combine like terms: 3 + -15 = -12
15 + -1d = -12

Solving
15 + -1d = -12

Solving for variable 'd'.

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

Add '-15' to each side of the equation.
15 + -15 + -1d = -12 + -15

Combine like terms: 15 + -15 = 0
0 + -1d = -12 + -15
-1d = -12 + -15

Combine like terms: -12 + -15 = -27
-1d = -27

Divide each side by '-1'.
d = 27

Simplifying
d = 27

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