1-y=3

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Solution for 1-y=3 equation: 


Simplifying
1 + -1y = 3

Solving
1 + -1y = 3

Solving for variable 'y'.

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

Add '-1' to each side of the equation.
1 + -1 + -1y = 3 + -1

Combine like terms: 1 + -1 = 0
0 + -1y = 3 + -1
-1y = 3 + -1

Combine like terms: 3 + -1 = 2
-1y = 2

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

Simplifying
y = -2

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