Question

а) 8,5 - 2 1/4(6 - 3 1/3 : 2,5)=
б) (2 2/3 : 1,2 - 2)6 3/4 - 5,5 =

Answer 1

а)8.5 - 2 1/4(6 - 3 1/3 : 2.5) =
8.5 - 9/4(6 - 4/3) =
8.5 - 9/4 * 14/3 =
8.5 - 10.5 = -2
б) (2 2/3 : 1.2 - 2)6 3/4 - 5.5 =
(20/9 - 2) * 6.75 - 5.5 =
2/9 * 6.75 - 5.5 =
1.5 - 5.5 = -4