-7=-9+Z-2

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Solution for -7=-9+Z-2 equation:


Simplifying
-7 = -9 + Z + -2

Reorder the terms:
-7 = -9 + -2 + Z

Combine like terms: -9 + -2 = -11
-7 = -11 + Z

Solving
-7 = -11 + Z

Solving for variable 'Z'.

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

Add '-1Z' to each side of the equation.
-7 + -1Z = -11 + Z + -1Z

Combine like terms: Z + -1Z = 0
-7 + -1Z = -11 + 0
-7 + -1Z = -11

Add '7' to each side of the equation.
-7 + 7 + -1Z = -11 + 7

Combine like terms: -7 + 7 = 0
0 + -1Z = -11 + 7
-1Z = -11 + 7

Combine like terms: -11 + 7 = -4
-1Z = -4

Divide each side by '-1'.
Z = 4

Simplifying
Z = 4

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