12+2z+z+3=18

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Solution for 12+2z+z+3=18 equation:


Simplifying
12 + 2z + z + 3 = 18

Reorder the terms:
12 + 3 + 2z + z = 18

Combine like terms: 12 + 3 = 15
15 + 2z + z = 18

Combine like terms: 2z + z = 3z
15 + 3z = 18

Solving
15 + 3z = 18

Solving for variable 'z'.

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

Add '-15' to each side of the equation.
15 + -15 + 3z = 18 + -15

Combine like terms: 15 + -15 = 0
0 + 3z = 18 + -15
3z = 18 + -15

Combine like terms: 18 + -15 = 3
3z = 3

Divide each side by '3'.
z = 1

Simplifying
z = 1

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