Question

A) 1/2+5/2 B)4/6+2/2 C)3/5+2/3 D)2/5+1/4 E)2/3-5/6 F)-3/5+1/10 J)-1/2+1/6

Answer 1

Explicação passo-a-passo:

A)

$\frac{1}{2} + \frac{5}{2} = \frac{1 + 5}{2} = \frac{ 6 }{2} = 3$

B)

$\frac{4}{6} + \frac{2}{2} = \frac{4 + (3 \times 2)}{6} = \frac{4 + 6}{6} = \frac{10}{6} = \frac{5}{3}$

C)

$\frac{3}{5} + \frac{2}{3} = \frac{(3 \times 3) + (5 \times 2)}{15} = \frac{9 + 10}{15} = \frac{19}{15}$

D)

$\frac{2}{5} + \frac{1}{4} = \frac{(4 \times 2) + (5 \times 1)}{20} = \frac{8 + 5}{20} = \frac{13}{20}$

E)

$\frac{2}{3} - \frac{5}{6} = \frac{(2 \times 2) - 5}{6} = \frac{4 - 5}{6} = - \frac{1}{6}$

F)

$- \frac{3}{5} + \frac{1}{10} = \frac{( - 3 \times 2) + 1}{10} = \frac{ - 6 + 1}{10} = - \frac{5}{10} = - \frac{1}{2}$

J)

$- \frac{1}{2} + \frac{1}{6} = \frac{( - 1 \times 3) + 1}{6} = \frac{ - 3 + 1}{6} = - \frac{2}{6} = - \frac{1}{3}$