9-2z=30+z

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Solution for 9-2z=30+z equation:


Simplifying
9 + -2z = 30 + z

Solving
9 + -2z = 30 + z

Solving for variable 'z'.

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

Add '-1z' to each side of the equation.
9 + -2z + -1z = 30 + z + -1z

Combine like terms: -2z + -1z = -3z
9 + -3z = 30 + z + -1z

Combine like terms: z + -1z = 0
9 + -3z = 30 + 0
9 + -3z = 30

Add '-9' to each side of the equation.
9 + -9 + -3z = 30 + -9

Combine like terms: 9 + -9 = 0
0 + -3z = 30 + -9
-3z = 30 + -9

Combine like terms: 30 + -9 = 21
-3z = 21

Divide each side by '-3'.
z = -7

Simplifying
z = -7

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