7d+4=5d+15

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Solution for 7d+4=5d+15 equation:


Simplifying
7d + 4 = 5d + 15

Reorder the terms:
4 + 7d = 5d + 15

Reorder the terms:
4 + 7d = 15 + 5d

Solving
4 + 7d = 15 + 5d

Solving for variable 'd'.

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

Add '-5d' to each side of the equation.
4 + 7d + -5d = 15 + 5d + -5d

Combine like terms: 7d + -5d = 2d
4 + 2d = 15 + 5d + -5d

Combine like terms: 5d + -5d = 0
4 + 2d = 15 + 0
4 + 2d = 15

Add '-4' to each side of the equation.
4 + -4 + 2d = 15 + -4

Combine like terms: 4 + -4 = 0
0 + 2d = 15 + -4
2d = 15 + -4

Combine like terms: 15 + -4 = 11
2d = 11

Divide each side by '2'.
d = 5.5

Simplifying
d = 5.5

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