Question

Ajutati-ma si pe mine va rog cu ex 2,3 si 4
Dau coroana!

Answer 1

Răspuns:

$4. \\ a) \frac{3}{ \times + 4} = \frac{6}{18} \\ 3 \times 18 = 6( \times + 4) \\ 54 = 6 \times + 24 \\ 6 \times = 24 - 54 \\ 6 \times = - 30 \\ \times = \frac{ - 30}{6} \\ \times = - 5$

Explicație pas cu pas:

$3.f) \frac{4 \times - 7}{6} = \frac{8}{48} \\ 48 (4 \times - 7) = 6 \times 8 \\ 192 \times -336 = 48 \\ 192 \times = 48 + 336 \\ 192 \times = 384 \\ \times = \frac{384}{192} \\ \times = 2$

$3 \: g) \frac{3 \times -1}{15} = \frac{4}{12} \\ 12(3 \times - 1) = 15 \times 4 \\ 36 \times - 12 = 60 \\ 36 \times = 60 + 12 \\ 36 \times = 72 \\ \times = \frac{72}{36} \\ \times = 2$