9z-3(2z-4)=15

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Solution for 9z-3(2z-4)=15 equation:


Simplifying
9z + -3(2z + -4) = 15

Reorder the terms:
9z + -3(-4 + 2z) = 15
9z + (-4 * -3 + 2z * -3) = 15
9z + (12 + -6z) = 15

Reorder the terms:
12 + 9z + -6z = 15

Combine like terms: 9z + -6z = 3z
12 + 3z = 15

Solving
12 + 3z = 15

Solving for variable 'z'.

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

Add '-12' to each side of the equation.
12 + -12 + 3z = 15 + -12

Combine like terms: 12 + -12 = 0
0 + 3z = 15 + -12
3z = 15 + -12

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

Divide each side by '3'.
z = 1

Simplifying
z = 1

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