7-3z=28

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Solution for 7-3z=28 equation: 


Simplifying
7 + -3z = 28

Solving
7 + -3z = 28

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 + -3z = 28 + -7

Combine like terms: 7 + -7 = 0
0 + -3z = 28 + -7
-3z = 28 + -7

Combine like terms: 28 + -7 = 21
-3z = 21

Divide each side by '-3'.
z = -7

Simplifying
z = -7

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