7+5-4z=8

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Solution for 7+5-4z=8 equation: 


Simplifying
7 + 5 + -4z = 8

Combine like terms: 7 + 5 = 12
12 + -4z = 8

Solving
12 + -4z = 8

Solving for variable 'z'.

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

Add '-12' to each side of the equation.
12 + -12 + -4z = 8 + -12

Combine like terms: 12 + -12 = 0
0 + -4z = 8 + -12
-4z = 8 + -12

Combine like terms: 8 + -12 = -4
-4z = -4

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

Simplifying
z = 1

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