1 13/45 × 3 3/4 = (1 + 13/45) × (3 + 3/4)= (45/45 + 13/45) × (12/4 + 3/4)= 58/45 × 15/4= 58/3 × 15= 58 × 5= 290.
Ответ: 290.
1 13/45 × 3 3/4 = (1 + 13/45) × (3 + 3/4)
= (45/45 + 13/45) × (12/4 + 3/4)
= 58/45 × 15/4
= 58/3 × 15
= 58 × 5
= 290.
Ответ: 290.