4d-9=6d+15

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Solution for 4d-9=6d+15 equation:


Simplifying
4d + -9 = 6d + 15

Reorder the terms:
-9 + 4d = 6d + 15

Reorder the terms:
-9 + 4d = 15 + 6d

Solving
-9 + 4d = 15 + 6d

Solving for variable 'd'.

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

Add '-6d' to each side of the equation.
-9 + 4d + -6d = 15 + 6d + -6d

Combine like terms: 4d + -6d = -2d
-9 + -2d = 15 + 6d + -6d

Combine like terms: 6d + -6d = 0
-9 + -2d = 15 + 0
-9 + -2d = 15

Add '9' to each side of the equation.
-9 + 9 + -2d = 15 + 9

Combine like terms: -9 + 9 = 0
0 + -2d = 15 + 9
-2d = 15 + 9

Combine like terms: 15 + 9 = 24
-2d = 24

Divide each side by '-2'.
d = -12

Simplifying
d = -12

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