8d+7=3d+42

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Solution for 8d+7=3d+42 equation:


Simplifying
8d + 7 = 3d + 42

Reorder the terms:
7 + 8d = 3d + 42

Reorder the terms:
7 + 8d = 42 + 3d

Solving
7 + 8d = 42 + 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.
7 + 8d + -3d = 42 + 3d + -3d

Combine like terms: 8d + -3d = 5d
7 + 5d = 42 + 3d + -3d

Combine like terms: 3d + -3d = 0
7 + 5d = 42 + 0
7 + 5d = 42

Add '-7' to each side of the equation.
7 + -7 + 5d = 42 + -7

Combine like terms: 7 + -7 = 0
0 + 5d = 42 + -7
5d = 42 + -7

Combine like terms: 42 + -7 = 35
5d = 35

Divide each side by '5'.
d = 7

Simplifying
d = 7

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