3z-15=z+3

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


Simplifying
3z + -15 = z + 3

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

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

Solving
-15 + 3z = 3 + z

Solving for variable 'z'.

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

Add '-1z' to each side of the equation.
-15 + 3z + -1z = 3 + z + -1z

Combine like terms: 3z + -1z = 2z
-15 + 2z = 3 + z + -1z

Combine like terms: z + -1z = 0
-15 + 2z = 3 + 0
-15 + 2z = 3

Add '15' to each side of the equation.
-15 + 15 + 2z = 3 + 15

Combine like terms: -15 + 15 = 0
0 + 2z = 3 + 15
2z = 3 + 15

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

Divide each side by '2'.
z = 9

Simplifying
z = 9

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