-y+1=-4+7

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Solution for -y+1=-4+7 equation: 


Simplifying
-1y + 1 = -4 + 7

Reorder the terms:
1 + -1y = -4 + 7

Combine like terms: -4 + 7 = 3
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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