3z-(2z-7)=15

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


Simplifying
3z + -1(2z + -7) = 15

Reorder the terms:
3z + -1(-7 + 2z) = 15
3z + (-7 * -1 + 2z * -1) = 15
3z + (7 + -2z) = 15

Reorder the terms:
7 + 3z + -2z = 15

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

Solving
7 + 1z = 15

Solving for variable 'z'.

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

Add '-7' to each side of the equation.
7 + -7 + 1z = 15 + -7

Combine like terms: 7 + -7 = 0
0 + 1z = 15 + -7
1z = 15 + -7

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

Divide each side by '1'.
z = 8

Simplifying
z = 8

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