2+81=9z-7

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Solution for 2+81=9z-7 equation:


Simplifying
2 + 81 = 9z + -7

Combine like terms: 2 + 81 = 83
83 = 9z + -7

Reorder the terms:
83 = -7 + 9z

Solving
83 = -7 + 9z

Solving for variable 'z'.

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

Add '-9z' to each side of the equation.
83 + -9z = -7 + 9z + -9z

Combine like terms: 9z + -9z = 0
83 + -9z = -7 + 0
83 + -9z = -7

Add '-83' to each side of the equation.
83 + -83 + -9z = -7 + -83

Combine like terms: 83 + -83 = 0
0 + -9z = -7 + -83
-9z = -7 + -83

Combine like terms: -7 + -83 = -90
-9z = -90

Divide each side by '-9'.
z = 10

Simplifying
z = 10

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