Resposta:
A)13/24
B)17/4
Explicação passo a passo:
A)3/8+1/6= 9/24 + 4/24= 13/24
B)9/2-1/4= 18/4 - 1/4= 17/4
[tex] \frac{3}{8} + \frac{1}{8} = \frac{26}{48} = \frac{13}{24} [/tex]
[tex] \frac{9}{2} - \frac{1}{4} = \frac{36}{8} - \frac{2}{8} = \frac{34}{8} = \frac{17}{4} [/tex]
