9d+7=7d+13

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Solution for 9d+7=7d+13 equation:


Simplifying
9d + 7 = 7d + 13

Reorder the terms:
7 + 9d = 7d + 13

Reorder the terms:
7 + 9d = 13 + 7d

Solving
7 + 9d = 13 + 7d

Solving for variable 'd'.

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

Add '-7d' to each side of the equation.
7 + 9d + -7d = 13 + 7d + -7d

Combine like terms: 9d + -7d = 2d
7 + 2d = 13 + 7d + -7d

Combine like terms: 7d + -7d = 0
7 + 2d = 13 + 0
7 + 2d = 13

Add '-7' to each side of the equation.
7 + -7 + 2d = 13 + -7

Combine like terms: 7 + -7 = 0
0 + 2d = 13 + -7
2d = 13 + -7

Combine like terms: 13 + -7 = 6
2d = 6

Divide each side by '2'.
d = 3

Simplifying
d = 3

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