7-z=3-1

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Solution for 7-z=3-1 equation: 


Simplifying
7 + -1z = 3 + -1

Combine like terms: 3 + -1 = 2
7 + -1z = 2

Solving
7 + -1z = 2

Solving for variable 'z'.

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

Add '-7' to each side of the equation.
7 + -7 + -1z = 2 + -7

Combine like terms: 7 + -7 = 0
0 + -1z = 2 + -7
-1z = 2 + -7

Combine like terms: 2 + -7 = -5
-1z = -5

Divide each side by '-1'.
z = 5

Simplifying
z = 5

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