Question

реши уравнение a-3 7/15=4 11/20

Answer 1

а - 3 7/15 = 4 11/20
а = 4 11/20 + 3 7/15
а = (4 + 3) + (11/20 + 7/15) = 7 + (165/300 + 140/300) = 7 + 305/300 = 7 + 1 5/300 = 8 1/60