3+d=-9

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Solution for 3+d=-9 equation: 


Simplifying
3 + d = -9

Solving
3 + d = -9

Solving for variable 'd'.

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

Add '-3' to each side of the equation.
3 + -3 + d = -9 + -3

Combine like terms: 3 + -3 = 0
0 + d = -9 + -3
d = -9 + -3

Combine like terms: -9 + -3 = -12
d = -12

Simplifying
d = -12

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