15-z=4

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Solution for 15-z=4 equation: 


Simplifying
15 + -1z = 4

Solving
15 + -1z = 4

Solving for variable 'z'.

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

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

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

Combine like terms: 4 + -15 = -11
-1z = -11

Divide each side by '-1'.
z = 11

Simplifying
z = 11

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