Question

operações com adições e subtrações a)17/3 -8/3 b)-3/2 + 5/2 c)-4/3 - (-2/3) d)5/7+3/2??????​

Answer 1

Resposta:

a)

$\frac{17}{3} - \frac{8}{3} = \frac{17 - 8}{4} = \frac{9}{3} = 3$

b)

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

c)

$- \frac{4}{3} - ( - \frac{2}{3} ) = - \frac{4}{3} + \frac{2}{3} = \frac{ - 4 + 2}{3} = - \frac{2}{3} = - 0.666...$

d)

$\frac{5}{7} + \frac{3}{2} = \frac{10}{14} + \frac{21}{14} = \frac{10 + 21}{14} = \frac{31}{14} = \frac{31}{2 \times 7} = 5 \times \frac{3}{14}$