Question

Folosind valorile de mai jos Verificați distributivitatea înmulțirii față de adunare adică a • (b+c) = a•b+a•c​

Answer 1

a • (b+c) = a•b+a•c

a)

$\frac{2}{3} \times ( - \frac{3}{4 } + \frac{11}{4} ) = \frac{2}{3} \times ( - \frac{3}{4}) + \frac{2}{3} \times \frac{11}{4} \\ \\ \\ \frac{2}{3} \times \frac{ - 3 + 11}{4} = \frac{2 \times ( - 3)}{3 \times 4} + \frac{2 \times 11}{3 \times 4} \\ \\ \\ \frac{2}{3} \times \frac{8}{4} = \frac{ - 6}{12} + \frac{22}{12} \\ \\ \\ \frac{2 \times 8}{3 \times 4} = \frac{ - 6 + 22}{12} \\ \\ \\ \frac{16}{12} = \frac{16}{12} adevarat$