Question

7 Calculați: a)1/3×4/5×15/2=
b)4/21×7/2×3/5=
c)3/4×2/33×7/3
d)24/15×5/6×3/2=



va rog urgent!!!​

Answer 1

Răspuns:

a) 1/3×4/5×15/2

1×4/3×5×(15/2)

4/15×(15/2)

4×15/15×2

4/2

2

b)

$\frac{ 4 }{ 21 } \times \frac{ 7 }{ 2 } \times \frac{ 3 }{ 5 }$

$\frac{4\times 7}{21\times 2}\times \left(\frac{3}{5}\right)$

$\frac{28}{42}\times \left(\frac{3}{5}\right)$

$\frac{2}{3}\times \left(\frac{3}{5}\right)$

$\frac{2\times 3}{3\times 5}$

$\frac{2}{5} = 0.4$

c) 3/4×2/33×7/3

3×2/4×33×(7/3)

6/132×(7/3)

1/22×(7/3)

1×7/22×3

7/66