решение на фото..............
1 7/12+3 5/9 = 19/12 + 32/9 = 57/36+128/36=185/36=5 5/36
5 5/24+2 1/6 = 125/24 + 13/6 = 125/24+52/24 = 177/24 = 7 9/24 = 7 3/8
3 1/12 + 4 2/15 = 37/12 + 62/15 = 185/60 + 248/60= 433/60 = 7 13/60
решение на фото..............
1 7/12+3 5/9 = 19/12 + 32/9 = 57/36+128/36=185/36=5 5/36
5 5/24+2 1/6 = 125/24 + 13/6 = 125/24+52/24 = 177/24 = 7 9/24 = 7 3/8
3 1/12 + 4 2/15 = 37/12 + 62/15 = 185/60 + 248/60= 433/60 = 7 13/60