65-y=42

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Solution for 65-y=42 equation:


Simplifying
65 + -1y = 42

Solving
65 + -1y = 42

Solving for variable 'y'.

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

Add '-65' to each side of the equation.
65 + -65 + -1y = 42 + -65

Combine like terms: 65 + -65 = 0
0 + -1y = 42 + -65
-1y = 42 + -65

Combine like terms: 42 + -65 = -23
-1y = -23

Divide each side by '-1'.
y = 23

Simplifying
y = 23

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