2.3/4 – [3.1/8 ÷ {5 – (4.2/3 – 11/12)}]
Answers:
2.3/4 – [3.1/8 ÷ {5 – (4.2/3 – 11/12)}]
= 11/4 – [25/8 ÷ {5 – (14/3 – 11/12)}]
= 11/4 = [25/8 ÷ {5 – (56 – 11)/12}]
= 11/4 – [25/8 ÷ {5 – 45/12}]
= 11/4 – [25/8 ÷ {(60 – 45)/12}]
= 11/4 – [25/8 ÷ 15/12]
= 11/4 – [25/8 × 12/15]
= 11/4 – 5/2
= (11 – 10)/4
= ¼