4-1y=1/2(y-1)

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Solution for 4-1y=1/2(y-1) equation: 


y in (-oo:+oo)

4-(1*y) = (1/2)*(y-1) // - (1/2)*(y-1)

4-((1/2)*(y-1))-(1*y) = 0

(-1/2)*(y-1)-y+4 = 0

4-1/2*(y-1)-y = 0

4-1/2*(y-1)-y = 0

1/2-3/2*y+4 = 0

9/2-3/2*y = 0

9/2-3/2*y = 0

9/2-3/2*y = 0 // - 9/2

-3/2*y = -9/2 // : -3/2

y = -9/2/(-3/2)

y = 3

y = 3

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