z(a-4)+15=13

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Solution for z(a-4)+15=13 equation:


Simplifying
z(a + -4) + 15 = 13

Reorder the terms:
z(-4 + a) + 15 = 13
(-4 * z + a * z) + 15 = 13

Reorder the terms:
(az + -4z) + 15 = 13
(az + -4z) + 15 = 13

Reorder the terms:
15 + az + -4z = 13

Solving
15 + az + -4z = 13

Solving for variable 'a'.

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

Add '-15' to each side of the equation.
15 + az + -15 + -4z = 13 + -15

Reorder the terms:
15 + -15 + az + -4z = 13 + -15

Combine like terms: 15 + -15 = 0
0 + az + -4z = 13 + -15
az + -4z = 13 + -15

Combine like terms: 13 + -15 = -2
az + -4z = -2

Add '4z' to each side of the equation.
az + -4z + 4z = -2 + 4z

Combine like terms: -4z + 4z = 0
az + 0 = -2 + 4z
az = -2 + 4z

Divide each side by 'z'.
a = -2z-1 + 4

Simplifying
a = -2z-1 + 4

Reorder the terms:
a = 4 + -2z-1

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