21-2=34+9z

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Solution for 21-2=34+9z equation:


Simplifying
21 + -2 = 34 + 9z

Combine like terms: 21 + -2 = 19
19 = 34 + 9z

Solving
19 = 34 + 9z

Solving for variable 'z'.

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

Add '-9z' to each side of the equation.
19 + -9z = 34 + 9z + -9z

Combine like terms: 9z + -9z = 0
19 + -9z = 34 + 0
19 + -9z = 34

Add '-19' to each side of the equation.
19 + -19 + -9z = 34 + -19

Combine like terms: 19 + -19 = 0
0 + -9z = 34 + -19
-9z = 34 + -19

Combine like terms: 34 + -19 = 15
-9z = 15

Divide each side by '-9'.
z = -1.666666667

Simplifying
z = -1.666666667

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