12z-2=9z-7

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Solution for 12z-2=9z-7 equation:


Simplifying
12z + -2 = 9z + -7

Reorder the terms:
-2 + 12z = 9z + -7

Reorder the terms:
-2 + 12z = -7 + 9z

Solving
-2 + 12z = -7 + 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.
-2 + 12z + -9z = -7 + 9z + -9z

Combine like terms: 12z + -9z = 3z
-2 + 3z = -7 + 9z + -9z

Combine like terms: 9z + -9z = 0
-2 + 3z = -7 + 0
-2 + 3z = -7

Add '2' to each side of the equation.
-2 + 2 + 3z = -7 + 2

Combine like terms: -2 + 2 = 0
0 + 3z = -7 + 2
3z = -7 + 2

Combine like terms: -7 + 2 = -5
3z = -5

Divide each side by '3'.
z = -1.666666667

Simplifying
z = -1.666666667

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