20-z=17

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Solution for 20-z=17 equation:


Simplifying
20 + -1z = 17

Solving
20 + -1z = 17

Solving for variable 'z'.

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

Add '-20' to each side of the equation.
20 + -20 + -1z = 17 + -20

Combine like terms: 20 + -20 = 0
0 + -1z = 17 + -20
-1z = 17 + -20

Combine like terms: 17 + -20 = -3
-1z = -3

Divide each side by '-1'.
z = 3

Simplifying
z = 3

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