400=z-100

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Solution for 400=z-100 equation:


Simplifying
400 = z + -100

Reorder the terms:
400 = -100 + z

Solving
400 = -100 + 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.
400 + -1z = -100 + z + -1z

Combine like terms: z + -1z = 0
400 + -1z = -100 + 0
400 + -1z = -100

Add '-400' to each side of the equation.
400 + -400 + -1z = -100 + -400

Combine like terms: 400 + -400 = 0
0 + -1z = -100 + -400
-1z = -100 + -400

Combine like terms: -100 + -400 = -500
-1z = -500

Divide each side by '-1'.
z = 500

Simplifying
z = 500

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