9(d-1)-d=8d-9

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Solution for 9(d-1)-d=8d-9 equation:


Simplifying
9(d + -1) + -1d = 8d + -9

Reorder the terms:
9(-1 + d) + -1d = 8d + -9
(-1 * 9 + d * 9) + -1d = 8d + -9
(-9 + 9d) + -1d = 8d + -9

Combine like terms: 9d + -1d = 8d
-9 + 8d = 8d + -9

Reorder the terms:
-9 + 8d = -9 + 8d

Add '9' to each side of the equation.
-9 + 9 + 8d = -9 + 9 + 8d

Combine like terms: -9 + 9 = 0
0 + 8d = -9 + 9 + 8d
8d = -9 + 9 + 8d

Combine like terms: -9 + 9 = 0
8d = 0 + 8d
8d = 8d

Add '-8d' to each side of the equation.
8d + -8d = 8d + -8d

Combine like terms: 8d + -8d = 0
0 = 8d + -8d

Combine like terms: 8d + -8d = 0
0 = 0

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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