Question

Y -[y-(2-y)-1]+4=-(-3-y)

Answer 1

y - [y -2 + y -1] +4 = +3 +y
y - y + 2 -y + 1 + 4 = 3 +y
y - 2y + 7 -3 - y = 0
4

Answer 2

Y - [y -2 + y -1] +4 = +3 +y
y - y + 2 -y + 1 + 4 = 3 +y
y - 2y + 7 -3 - y = 0
4