15=4z+4-5

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Solution for 15=4z+4-5 equation:


Simplifying
15 = 4z + 4 + -5

Reorder the terms:
15 = 4 + -5 + 4z

Combine like terms: 4 + -5 = -1
15 = -1 + 4z

Solving
15 = -1 + 4z

Solving for variable 'z'.

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

Add '-4z' to each side of the equation.
15 + -4z = -1 + 4z + -4z

Combine like terms: 4z + -4z = 0
15 + -4z = -1 + 0
15 + -4z = -1

Add '-15' to each side of the equation.
15 + -15 + -4z = -1 + -15

Combine like terms: 15 + -15 = 0
0 + -4z = -1 + -15
-4z = -1 + -15

Combine like terms: -1 + -15 = -16
-4z = -16

Divide each side by '-4'.
z = 4

Simplifying
z = 4

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