-5z+21=-4

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Solution for -5z+21=-4 equation: 


Simplifying
-5z + 21 = -4

Reorder the terms:
21 + -5z = -4

Solving
21 + -5z = -4

Solving for variable 'z'.

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

Add '-21' to each side of the equation.
21 + -21 + -5z = -4 + -21

Combine like terms: 21 + -21 = 0
0 + -5z = -4 + -21
-5z = -4 + -21

Combine like terms: -4 + -21 = -25
-5z = -25

Divide each side by '-5'.
z = 5

Simplifying
z = 5

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