z+3z-15=27+2z

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Solution for z+3z-15=27+2z equation:


Simplifying
z + 3z + -15 = 27 + 2z

Reorder the terms:
-15 + z + 3z = 27 + 2z

Combine like terms: z + 3z = 4z
-15 + 4z = 27 + 2z

Solving
-15 + 4z = 27 + 2z

Solving for variable 'z'.

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

Add '-2z' to each side of the equation.
-15 + 4z + -2z = 27 + 2z + -2z

Combine like terms: 4z + -2z = 2z
-15 + 2z = 27 + 2z + -2z

Combine like terms: 2z + -2z = 0
-15 + 2z = 27 + 0
-15 + 2z = 27

Add '15' to each side of the equation.
-15 + 15 + 2z = 27 + 15

Combine like terms: -15 + 15 = 0
0 + 2z = 27 + 15
2z = 27 + 15

Combine like terms: 27 + 15 = 42
2z = 42

Divide each side by '2'.
z = 21

Simplifying
z = 21

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