3-y=4

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Solution for 3-y=4 equation: 


Simplifying
3 + -1y = 4

Solving
3 + -1y = 4

Solving for variable 'y'.

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

Add '-3' to each side of the equation.
3 + -3 + -1y = 4 + -3

Combine like terms: 3 + -3 = 0
0 + -1y = 4 + -3
-1y = 4 + -3

Combine like terms: 4 + -3 = 1
-1y = 1

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

Simplifying
y = -1

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