-2(z+3)-2z+21=-3(z-5)-z

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Solution for -2(z+3)-2z+21=-3(z-5)-z equation: 


Simplifying
-2(z + 3) + -2z + 21 = -3(z + -5) + -1z

Reorder the terms:
-2(3 + z) + -2z + 21 = -3(z + -5) + -1z
(3 * -2 + z * -2) + -2z + 21 = -3(z + -5) + -1z
(-6 + -2z) + -2z + 21 = -3(z + -5) + -1z

Reorder the terms:
-6 + 21 + -2z + -2z = -3(z + -5) + -1z

Combine like terms: -6 + 21 = 15
15 + -2z + -2z = -3(z + -5) + -1z

Combine like terms: -2z + -2z = -4z
15 + -4z = -3(z + -5) + -1z

Reorder the terms:
15 + -4z = -3(-5 + z) + -1z
15 + -4z = (-5 * -3 + z * -3) + -1z
15 + -4z = (15 + -3z) + -1z

Combine like terms: -3z + -1z = -4z
15 + -4z = 15 + -4z

Add '-15' to each side of the equation.
15 + -15 + -4z = 15 + -15 + -4z

Combine like terms: 15 + -15 = 0
0 + -4z = 15 + -15 + -4z
-4z = 15 + -15 + -4z

Combine like terms: 15 + -15 = 0
-4z = 0 + -4z
-4z = -4z

Add '4z' to each side of the equation.
-4z + 4z = -4z + 4z

Combine like terms: -4z + 4z = 0
0 = -4z + 4z

Combine like terms: -4z + 4z = 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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