-5z+9=-21

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Solution for -5z+9=-21 equation: 


Simplifying
-5z + 9 = -21

Reorder the terms:
9 + -5z = -21

Solving
9 + -5z = -21

Solving for variable 'z'.

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

Add '-9' to each side of the equation.
9 + -9 + -5z = -21 + -9

Combine like terms: 9 + -9 = 0
0 + -5z = -21 + -9
-5z = -21 + -9

Combine like terms: -21 + -9 = -30
-5z = -30

Divide each side by '-5'.
z = 6

Simplifying
z = 6

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