7-2z=-9

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Solution for 7-2z=-9 equation: 


Simplifying
7 + -2z = -9

Solving
7 + -2z = -9

Solving for variable 'z'.

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

Add '-7' to each side of the equation.
7 + -7 + -2z = -9 + -7

Combine like terms: 7 + -7 = 0
0 + -2z = -9 + -7
-2z = -9 + -7

Combine like terms: -9 + -7 = -16
-2z = -16

Divide each side by '-2'.
z = 8

Simplifying
z = 8

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