7d+7=4d+13

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Solution for 7d+7=4d+13 equation:


Simplifying
7d + 7 = 4d + 13

Reorder the terms:
7 + 7d = 4d + 13

Reorder the terms:
7 + 7d = 13 + 4d

Solving
7 + 7d = 13 + 4d

Solving for variable 'd'.

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

Add '-4d' to each side of the equation.
7 + 7d + -4d = 13 + 4d + -4d

Combine like terms: 7d + -4d = 3d
7 + 3d = 13 + 4d + -4d

Combine like terms: 4d + -4d = 0
7 + 3d = 13 + 0
7 + 3d = 13

Add '-7' to each side of the equation.
7 + -7 + 3d = 13 + -7

Combine like terms: 7 + -7 = 0
0 + 3d = 13 + -7
3d = 13 + -7

Combine like terms: 13 + -7 = 6
3d = 6

Divide each side by '3'.
d = 2

Simplifying
d = 2

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