⦁Вычислите: a)3/4+1/11 б)3/8*2/5 в)2-5/6:8/9 помогите пж

Question

⦁Вычислите: a)3/4+1/11 б)3/8*2/5 в)2-5/6:8/9 помогите пж

Answer 1

а) 3/4 + 1/11 = 33/44 + 4/44 = 37/44

б) 3/8 × 2/5 = 6/40 = 3/20

в) 2(-5/6 ÷ 8/9) = 2(-15/18 ÷ 16/18) = 2(-15/18 × 18/16) = 2(-15/16) = -30/16 = -15/8 = -1 7/8 = -1,875