-13d-21=-3(d+7)-10d

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Solution for -13d-21=-3(d+7)-10d equation:


Simplifying
-13d + -21 = -3(d + 7) + -10d

Reorder the terms:
-21 + -13d = -3(d + 7) + -10d

Reorder the terms:
-21 + -13d = -3(7 + d) + -10d
-21 + -13d = (7 * -3 + d * -3) + -10d
-21 + -13d = (-21 + -3d) + -10d

Combine like terms: -3d + -10d = -13d
-21 + -13d = -21 + -13d

Add '21' to each side of the equation.
-21 + 21 + -13d = -21 + 21 + -13d

Combine like terms: -21 + 21 = 0
0 + -13d = -21 + 21 + -13d
-13d = -21 + 21 + -13d

Combine like terms: -21 + 21 = 0
-13d = 0 + -13d
-13d = -13d

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

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

Combine like terms: -13d + 13d = 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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