9d+9d-20d-15=-5

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Solution for 9d+9d-20d-15=-5 equation:


Simplifying
9d + 9d + -20d + -15 = -5

Reorder the terms:
-15 + 9d + 9d + -20d = -5

Combine like terms: 9d + 9d = 18d
-15 + 18d + -20d = -5

Combine like terms: 18d + -20d = -2d
-15 + -2d = -5

Solving
-15 + -2d = -5

Solving for variable 'd'.

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

Add '15' to each side of the equation.
-15 + 15 + -2d = -5 + 15

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

Combine like terms: -5 + 15 = 10
-2d = 10

Divide each side by '-2'.
d = -5

Simplifying
d = -5

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