x) 1/4 + 1 1/8 - 1 1/4 + 14/16 =
y) 2 5/6 + 1 3/4 - 3 7/12 =
z) -4 1/2 + 2 1/6 -10 3/8 =
z) 4 2/3 - (-2 1/9) + 2 3/4 =
ż) 3 1/9 - 4 8/15 - (6 20/45) =
a) (11/5 ÷ 3/5 - 11/3 × 3/10) + (11/2 + 3 × 1 1/3) = ​