7z-3=15z-15

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Solution for 7z-3=15z-15 equation: 


Simplifying
7z + -3 = 15z + -15

Reorder the terms:
-3 + 7z = 15z + -15

Reorder the terms:
-3 + 7z = -15 + 15z

Solving
-3 + 7z = -15 + 15z

Solving for variable 'z'.

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

Add '-15z' to each side of the equation.
-3 + 7z + -15z = -15 + 15z + -15z

Combine like terms: 7z + -15z = -8z
-3 + -8z = -15 + 15z + -15z

Combine like terms: 15z + -15z = 0
-3 + -8z = -15 + 0
-3 + -8z = -15

Add '3' to each side of the equation.
-3 + 3 + -8z = -15 + 3

Combine like terms: -3 + 3 = 0
0 + -8z = -15 + 3
-8z = -15 + 3

Combine like terms: -15 + 3 = -12
-8z = -12

Divide each side by '-8'.
z = 1.5

Simplifying
z = 1.5

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