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y-1+y=-3
We simplify the equation to the form, which is simple to understand
y-1+y=-3
We move all terms containing y to the left and all other terms to the right.
+1y+1y=-3+1
We simplify left and right side of the equation.
+2y=-2
We divide both sides of the equation by 2 to get y.
y=-1
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