3d+7=2d+15

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Solution for 3d+7=2d+15 equation:


Simplifying
3d + 7 = 2d + 15

Reorder the terms:
7 + 3d = 2d + 15

Reorder the terms:
7 + 3d = 15 + 2d

Solving
7 + 3d = 15 + 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 = 15 + 2d + -2d

Combine like terms: 3d + -2d = 1d
7 + 1d = 15 + 2d + -2d

Combine like terms: 2d + -2d = 0
7 + 1d = 15 + 0
7 + 1d = 15

Add '-7' to each side of the equation.
7 + -7 + 1d = 15 + -7

Combine like terms: 7 + -7 = 0
0 + 1d = 15 + -7
1d = 15 + -7

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

Divide each side by '1'.
d = 8

Simplifying
d = 8

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