[2-20/11]×22/7÷8/21-2

Question

[2-20/11]×22/7÷8/21-2

Answer 1

[2 - 20/11] × 22/7 ÷ 8/21 - 2 = - 1/2,

1) 2 - 20/11 = 22/11 - 20/11 = 2/11,
2) 2/11 * 22/7 = 4/7,
3) 4/7 : 8/21 = 4/7 * 21/8 = 3/2 = 1 1/2,
4) 1 1/2 - 2 = 3/2 - 4/2 = - 1/2