Question

cele mai inportant ce si de va rog !​

Answer 1

Răspuns:

Explicație pas cu pas:

trebuie sa introduci intregii in fractie...

"/" - fractie

a) = 24/5 • 15/8 = 3/5 • 15 = 3•3 = 9

b) = 16/5 • 7/4 = 4/5 • 7 = 4/5 • 7/1 = 28/5

c) = 21/2 • 5 = 21/2 • 5/1 = 105/2

d) = 7 • 13/4 = 7/1 • 13/4 = 91/4

Answer 2

Răspuns:

Bună,

$a)4 \frac{4}{5} \times 1 \frac{7}{8} = \\ \frac{5 \times 4 + 4}{5} \times \frac{8 \times 1 + 7}{8} = \\ \frac{24}{5} \times \frac{15}{8} = \\ 3 \times 3 = \\ \blue{9}$

$b)3 \frac{1}{5} \times 1\frac{3}{4} = \\ \frac{3 \times 5 + 1}{5} \times \frac{4 \times 1 + 3}{4} = \\ \frac{16}{5} \times \frac{7}{4} = \\ \frac{4}{5} \times 7 = \\ \green{ \frac{28}{5} }$

$c)10 \frac{1}{2} \times 5 = \\ \frac{2 \times 10 + 1}{2} \times 5 = \\ \frac{21}{2} \times 5 = \\ \purple{ \frac{105}{2} }$

$d)7 \times 3 \frac{1}{4} = \\ 7 \times \frac{4 \times 3 + 1}{4} = \\ 7 \times \frac{13}{4} = \\ \orange{ \frac{91}{4} }$

Sper că te-am ajutat.