19=23-y

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Solution for 19=23-y equation:


Simplifying
19 = 23 + -1y

Solving
19 = 23 + -1y

Solving for variable 'y'.

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

Add 'y' to each side of the equation.
19 + y = 23 + -1y + y

Combine like terms: -1y + y = 0
19 + y = 23 + 0
19 + y = 23

Add '-19' to each side of the equation.
19 + -19 + y = 23 + -19

Combine like terms: 19 + -19 = 0
0 + y = 23 + -19
y = 23 + -19

Combine like terms: 23 + -19 = 4
y = 4

Simplifying
y = 4

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