Question

encontre o resultado dos cálculos abaixo ​

Answer 1

Explicação passo-a-passo:

$\frac{3}{4} + \frac{2}{5} = 0 \\ \\ \frac{3 \times 5}{4 \times 5} + \frac{2 \times 4}{5 \times 4} = 0 \\ \\ \\ \frac{15}{20} + \frac{8}{20} = 0 \\ \\ \\ \frac{23}{20}$

b)7/2+9/3

$\frac{7}{2} + \frac{9}{3} = 0 \\ \\ \frac{7}{2} + \frac{3 \times 2}{1\times 2} = 0 \\ \\ \frac{7}{2} + \frac{6}{2} = 0 \ \\ \frac{13}{2}$

c)4/6+3/5=0

$\frac{4}{6} + \frac{3}{5} = 0 \\ \\ \frac{4 \times 5}{6 \times 5} + \frac{3 \times 6}{5 \times 6} = 0 \\ \\ \frac{20}{30} + \frac{18}{30} = 0 \\ \\ \frac{38}{30}$

espero ter ajudado