Выполните умножение:
1) 5/6 × 1 6/5=?
2) 3 1/9 × 3/4=?
3) 10 1/5 × 10/17=?
4) 9 1/7 × 3/4=?
5) 3/11 × 5 1/2=?
Помогите пж Дарю 15 баллов!
1) 5/6 × 1 6/5=?
2) 3 1/9 × 3/4=?
3) 10 1/5 × 10/17=?
4) 9 1/7 × 3/4=?
5) 3/11 × 5 1/2=?
Помогите пж Дарю 15 баллов!
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1) 5/6 × 1 6/5 = (5×11) / ( 6×5) = 11/6 = 1 5/62) 3 1/9 ×3/4 = (28×3 )/(9×4) = (7×1)/ (3×1)= 7/3 = 2 1/3
3) 10 1/5 × 10/7 = (51×10) / (5×7)= 102/7 = 14 4/7
4) 9 1/7 ×3/4 = (64×3) / (7×4)= (16×3) / (7×1)= 48/7 = 6 6/7
5) 3/11 × 5 1/2 = (3×11)/ (11×2)= 3/2 = 1 1/2