3z-2z=15-7

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Solution for 3z-2z=15-7 equation: 


Simplifying
3z + -2z = 15 + -7

Combine like terms: 3z + -2z = 1z
1z = 15 + -7

Combine like terms: 15 + -7 = 8
1z = 8

Solving
1z = 8

Solving for variable 'z'.

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

Divide each side by '1'.
z = 8

Simplifying
z = 8

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