.3(d+9)=-12

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Solution for .3(d+9)=-12 equation: 


Simplifying
0.3(d + 9) = -12

Reorder the terms:
0.3(9 + d) = -12
(9 * 0.3 + d * 0.3) = -12
(2.7 + 0.3d) = -12

Solving
2.7 + 0.3d = -12

Solving for variable 'd'.

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

Add '-2.7' to each side of the equation.
2.7 + -2.7 + 0.3d = -12 + -2.7

Combine like terms: 2.7 + -2.7 = 0.0
0.0 + 0.3d = -12 + -2.7
0.3d = -12 + -2.7

Combine like terms: -12 + -2.7 = -14.7
0.3d = -14.7

Divide each side by '0.3'.
d = -49

Simplifying
d = -49

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