2z-(-1)=9

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Solution for 2z-(-1)=9 equation: 


Simplifying
2z + -1(-1) = 9

Multiply -1 * -1
2z + 1 = 9

Reorder the terms:
1 + 2z = 9

Solving
1 + 2z = 9

Solving for variable 'z'.

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

Add '-1' to each side of the equation.
1 + -1 + 2z = 9 + -1

Combine like terms: 1 + -1 = 0
0 + 2z = 9 + -1
2z = 9 + -1

Combine like terms: 9 + -1 = 8
2z = 8

Divide each side by '2'.
z = 4

Simplifying
z = 4

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