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 - 3] + 4 = 3 + y
y - 2y + 3 + 4  = 3 + y
- y - y = 3 - 7
- 2y = - 4  . (-1)
2y = 4
y = 4 : 2
y = 2
x