-15-21z=25+(23z-8)+(5z-21)

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Solution for -15-21z=25+(23z-8)+(5z-21) equation:


Simplifying
-15 + -21z = 25 + (23z + -8) + (5z + -21)

Reorder the terms:
-15 + -21z = 25 + (-8 + 23z) + (5z + -21)

Remove parenthesis around (-8 + 23z)
-15 + -21z = 25 + -8 + 23z + (5z + -21)

Reorder the terms:
-15 + -21z = 25 + -8 + 23z + (-21 + 5z)

Remove parenthesis around (-21 + 5z)
-15 + -21z = 25 + -8 + 23z + -21 + 5z

Reorder the terms:
-15 + -21z = 25 + -8 + -21 + 23z + 5z

Combine like terms: 25 + -8 = 17
-15 + -21z = 17 + -21 + 23z + 5z

Combine like terms: 17 + -21 = -4
-15 + -21z = -4 + 23z + 5z

Combine like terms: 23z + 5z = 28z
-15 + -21z = -4 + 28z

Solving
-15 + -21z = -4 + 28z

Solving for variable 'z'.

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

Add '-28z' to each side of the equation.
-15 + -21z + -28z = -4 + 28z + -28z

Combine like terms: -21z + -28z = -49z
-15 + -49z = -4 + 28z + -28z

Combine like terms: 28z + -28z = 0
-15 + -49z = -4 + 0
-15 + -49z = -4

Add '15' to each side of the equation.
-15 + 15 + -49z = -4 + 15

Combine like terms: -15 + 15 = 0
0 + -49z = -4 + 15
-49z = -4 + 15

Combine like terms: -4 + 15 = 11
-49z = 11

Divide each side by '-49'.
z = -0.2244897959

Simplifying
z = -0.2244897959

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