9d+10=2d-11

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Solution for 9d+10=2d-11 equation:


Simplifying
9d + 10 = 2d + -11

Reorder the terms:
10 + 9d = 2d + -11

Reorder the terms:
10 + 9d = -11 + 2d

Solving
10 + 9d = -11 + 2d

Solving for variable 'd'.

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

Add '-2d' to each side of the equation.
10 + 9d + -2d = -11 + 2d + -2d

Combine like terms: 9d + -2d = 7d
10 + 7d = -11 + 2d + -2d

Combine like terms: 2d + -2d = 0
10 + 7d = -11 + 0
10 + 7d = -11

Add '-10' to each side of the equation.
10 + -10 + 7d = -11 + -10

Combine like terms: 10 + -10 = 0
0 + 7d = -11 + -10
7d = -11 + -10

Combine like terms: -11 + -10 = -21
7d = -21

Divide each side by '7'.
d = -3

Simplifying
d = -3

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