4(d-3)-(9d)=3(d+12)

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Solution for 4(d-3)-(9d)=3(d+12) equation:


Simplifying
4(d + -3) + -1(9d) = 3(d + 12)

Reorder the terms:
4(-3 + d) + -1(9d) = 3(d + 12)
(-3 * 4 + d * 4) + -1(9d) = 3(d + 12)
(-12 + 4d) + -1(9d) = 3(d + 12)

Remove parenthesis around (9d)
-12 + 4d + -1 * 9d = 3(d + 12)

Multiply -1 * 9
-12 + 4d + -9d = 3(d + 12)

Combine like terms: 4d + -9d = -5d
-12 + -5d = 3(d + 12)

Reorder the terms:
-12 + -5d = 3(12 + d)
-12 + -5d = (12 * 3 + d * 3)
-12 + -5d = (36 + 3d)

Solving
-12 + -5d = 36 + 3d

Solving for variable 'd'.

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

Add '-3d' to each side of the equation.
-12 + -5d + -3d = 36 + 3d + -3d

Combine like terms: -5d + -3d = -8d
-12 + -8d = 36 + 3d + -3d

Combine like terms: 3d + -3d = 0
-12 + -8d = 36 + 0
-12 + -8d = 36

Add '12' to each side of the equation.
-12 + 12 + -8d = 36 + 12

Combine like terms: -12 + 12 = 0
0 + -8d = 36 + 12
-8d = 36 + 12

Combine like terms: 36 + 12 = 48
-8d = 48

Divide each side by '-8'.
d = -6

Simplifying
d = -6

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