3d+7=2(d-4)

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Solution for 3d+7=2(d-4) equation:


Simplifying
3d + 7 = 2(d + -4)

Reorder the terms:
7 + 3d = 2(d + -4)

Reorder the terms:
7 + 3d = 2(-4 + d)
7 + 3d = (-4 * 2 + d * 2)
7 + 3d = (-8 + 2d)

Solving
7 + 3d = -8 + 2d

Solving for variable 'd'.

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

Add '-2d' to each side of the equation.
7 + 3d + -2d = -8 + 2d + -2d

Combine like terms: 3d + -2d = 1d
7 + 1d = -8 + 2d + -2d

Combine like terms: 2d + -2d = 0
7 + 1d = -8 + 0
7 + 1d = -8

Add '-7' to each side of the equation.
7 + -7 + 1d = -8 + -7

Combine like terms: 7 + -7 = 0
0 + 1d = -8 + -7
1d = -8 + -7

Combine like terms: -8 + -7 = -15
1d = -15

Divide each side by '1'.
d = -15

Simplifying
d = -15

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