45-5z=20

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Solution for 45-5z=20 equation: 


Simplifying
45 + -5z = 20

Solving
45 + -5z = 20

Solving for variable 'z'.

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

Add '-45' to each side of the equation.
45 + -45 + -5z = 20 + -45

Combine like terms: 45 + -45 = 0
0 + -5z = 20 + -45
-5z = 20 + -45

Combine like terms: 20 + -45 = -25
-5z = -25

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

Simplifying
z = 5

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