2z-21=42+92

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Solution for 2z-21=42+92 equation:


Simplifying
2z + -21 = 42 + 92

Reorder the terms:
-21 + 2z = 42 + 92

Combine like terms: 42 + 92 = 134
-21 + 2z = 134

Solving
-21 + 2z = 134

Solving for variable 'z'.

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

Add '21' to each side of the equation.
-21 + 21 + 2z = 134 + 21

Combine like terms: -21 + 21 = 0
0 + 2z = 134 + 21
2z = 134 + 21

Combine like terms: 134 + 21 = 155
2z = 155

Divide each side by '2'.
z = 77.5

Simplifying
z = 77.5

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