18+(4-z)=20

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Solution for 18+(4-z)=20 equation:


Simplifying
18 + (4 + -1z) = 20

Remove parenthesis around (4 + -1z)
18 + 4 + -1z = 20

Combine like terms: 18 + 4 = 22
22 + -1z = 20

Solving
22 + -1z = 20

Solving for variable 'z'.

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

Add '-22' to each side of the equation.
22 + -22 + -1z = 20 + -22

Combine like terms: 22 + -22 = 0
0 + -1z = 20 + -22
-1z = 20 + -22

Combine like terms: 20 + -22 = -2
-1z = -2

Divide each side by '-1'.
z = 2

Simplifying
z = 2

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