-9z+9z+13z+-20z+4=18

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Solution for -9z+9z+13z+-20z+4=18 equation:


Simplifying
-9z + 9z + 13z + -20z + 4 = 18

Reorder the terms:
4 + -9z + 9z + 13z + -20z = 18

Combine like terms: -9z + 9z = 0
4 + 0 + 13z + -20z = 18
4 + 13z + -20z = 18

Combine like terms: 13z + -20z = -7z
4 + -7z = 18

Solving
4 + -7z = 18

Solving for variable 'z'.

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

Add '-4' to each side of the equation.
4 + -4 + -7z = 18 + -4

Combine like terms: 4 + -4 = 0
0 + -7z = 18 + -4
-7z = 18 + -4

Combine like terms: 18 + -4 = 14
-7z = 14

Divide each side by '-7'.
z = -2

Simplifying
z = -2

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