Найдите значение выражения а) 3 5/16 + 1/4 - 2 1/16 б) 1/8 + 2 3/5 + 2 7/8

3 5/16 + 1/4 - 2 1/6= 106/32 + 8/32 + 43/32=71/321/8 + 2 3/5 + 2 7/8 = 5/40+104/40+115/40=224/40=5 24/40

а) 3 5/16 + 1/4 - 2 1/16 = (3 5/16 - 2 1/16) + 1/4 = 1 1/21) 3 5/16 - 2 1/16 = 1 4/162) 1 4/16 + 1/4 = 1 4/16 + 4/16 = 1 8/16 (1 8/16 = 1 4/8 = 1 2/4 = 1 1/2)б) 1/8 + 2 3/5 + 2 7/8 = 1/8 + 2 7/8 + 2 3/5 = 5 3/51) 1/8 + 2 7/8 = 2 8/82) 2 8/8 + 2 3/5 = 2 40/40 + 2 24/40 = 4 64/40 (5 24/40 = 5 12/20 = 5 6/10 = 5 3/5)