3z-(-18)=42

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Solution for 3z-(-18)=42 equation: 


Simplifying
3z + -1(-18) = 42

Multiply -1 * -18
3z + 18 = 42

Reorder the terms:
18 + 3z = 42

Solving
18 + 3z = 42

Solving for variable 'z'.

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

Add '-18' to each side of the equation.
18 + -18 + 3z = 42 + -18

Combine like terms: 18 + -18 = 0
0 + 3z = 42 + -18
3z = 42 + -18

Combine like terms: 42 + -18 = 24
3z = 24

Divide each side by '3'.
z = 8

Simplifying
z = 8

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