15d+7=9d+55

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Solution for 15d+7=9d+55 equation:


Simplifying
15d + 7 = 9d + 55

Reorder the terms:
7 + 15d = 9d + 55

Reorder the terms:
7 + 15d = 55 + 9d

Solving
7 + 15d = 55 + 9d

Solving for variable 'd'.

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

Add '-9d' to each side of the equation.
7 + 15d + -9d = 55 + 9d + -9d

Combine like terms: 15d + -9d = 6d
7 + 6d = 55 + 9d + -9d

Combine like terms: 9d + -9d = 0
7 + 6d = 55 + 0
7 + 6d = 55

Add '-7' to each side of the equation.
7 + -7 + 6d = 55 + -7

Combine like terms: 7 + -7 = 0
0 + 6d = 55 + -7
6d = 55 + -7

Combine like terms: 55 + -7 = 48
6d = 48

Divide each side by '6'.
d = 8

Simplifying
d = 8

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