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

Resposta:

A)

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

b)

$\frac{4}{6(1)} + \frac{2}{2(3)} = \frac{4}{6} + \frac{6}{6} = \frac{10 \div 2}{6 \div 2} = \frac{5}{3}$

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

d)

$\frac{2}{5(4)} + \frac{1}{4(5)} = \frac{8}{20} + \frac{5}{20} = \frac{8 + 5}{20} = \frac{15 \div 5}{20 \div 5} = \frac{3}{4}$

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

$f) - \frac{3}{5(2)} + \frac{1}{10(1)} = - \frac{6}{10} + \frac{1}{10} = - \frac{5 \div5}{10 \div 5} = - \frac{1}{2}$

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