-42=9+8z

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Solution for -42=9+8z equation:


Simplifying
-42 = 9 + 8z

Solving
-42 = 9 + 8z

Solving for variable 'z'.

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

Add '-8z' to each side of the equation.
-42 + -8z = 9 + 8z + -8z

Combine like terms: 8z + -8z = 0
-42 + -8z = 9 + 0
-42 + -8z = 9

Add '42' to each side of the equation.
-42 + 42 + -8z = 9 + 42

Combine like terms: -42 + 42 = 0
0 + -8z = 9 + 42
-8z = 9 + 42

Combine like terms: 9 + 42 = 51
-8z = 51

Divide each side by '-8'.
z = -6.375

Simplifying
z = -6.375

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