(12z-2)-(9+20z)=

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Solution for (12z-2)-(9+20z)= equation:


Simplifying
(12z + -2) + -1(9 + 20z) = 0

Reorder the terms:
(-2 + 12z) + -1(9 + 20z) = 0

Remove parenthesis around (-2 + 12z)
-2 + 12z + -1(9 + 20z) = 0
-2 + 12z + (9 * -1 + 20z * -1) = 0
-2 + 12z + (-9 + -20z) = 0

Reorder the terms:
-2 + -9 + 12z + -20z = 0

Combine like terms: -2 + -9 = -11
-11 + 12z + -20z = 0

Combine like terms: 12z + -20z = -8z
-11 + -8z = 0

Solving
-11 + -8z = 0

Solving for variable 'z'.

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

Add '11' to each side of the equation.
-11 + 11 + -8z = 0 + 11

Combine like terms: -11 + 11 = 0
0 + -8z = 0 + 11
-8z = 0 + 11

Combine like terms: 0 + 11 = 11
-8z = 11

Divide each side by '-8'.
z = -1.375

Simplifying
z = -1.375

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