12z-15z-12z-24=21z-7

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Solution for 12z-15z-12z-24=21z-7 equation:


Simplifying
12z + -15z + -12z + -24 = 21z + -7

Reorder the terms:
-24 + 12z + -15z + -12z = 21z + -7

Combine like terms: 12z + -15z = -3z
-24 + -3z + -12z = 21z + -7

Combine like terms: -3z + -12z = -15z
-24 + -15z = 21z + -7

Reorder the terms:
-24 + -15z = -7 + 21z

Solving
-24 + -15z = -7 + 21z

Solving for variable 'z'.

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

Add '-21z' to each side of the equation.
-24 + -15z + -21z = -7 + 21z + -21z

Combine like terms: -15z + -21z = -36z
-24 + -36z = -7 + 21z + -21z

Combine like terms: 21z + -21z = 0
-24 + -36z = -7 + 0
-24 + -36z = -7

Add '24' to each side of the equation.
-24 + 24 + -36z = -7 + 24

Combine like terms: -24 + 24 = 0
0 + -36z = -7 + 24
-36z = -7 + 24

Combine like terms: -7 + 24 = 17
-36z = 17

Divide each side by '-36'.
z = -0.4722222222

Simplifying
z = -0.4722222222

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