d+(-21)=(-15)

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Solution for d+(-21)=(-15) equation:


Simplifying
d + (-21) = (-15)
d + -21 = (-15)

Reorder the terms:
-21 + d = (-15)
-21 + d = -15

Solving
-21 + d = -15

Solving for variable 'd'.

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

Add '21' to each side of the equation.
-21 + 21 + d = -15 + 21

Combine like terms: -21 + 21 = 0
0 + d = -15 + 21
d = -15 + 21

Combine like terms: -15 + 21 = 6
d = 6

Simplifying
d = 6

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