Question

a)2/7 + 5/7 -12/7=

b)3/4+1/2-3/5=

c)7/3.(-1/4).3/2=

d)3/4:(-1/3)=

e)1/2.3/2+(-1/3)=

POR FAVOR GENTE ME AJUDEM, PFVRRR​

Answer 1

Resposta:

a) $-\frac{5}{7}$

b) $\frac{13}{20}$

c) $-\frac{7}{8}$

d) $-\frac{9}{4}$

e) $\frac{5}{12}$

Explicação passo-a-passo:

a) $\frac{2}{7} + \frac{5}{7} - \frac{12}{7}$ = $\frac{2+5-12}{7}$ = $-\frac{5}{7}$

b) $\frac{3}{4} * \frac{1}{2} * \frac{3}{5}$ = $\frac{15+10-12}{20}$ = $\frac{13}{20}$

c) $\frac{7}{3} * \frac{-1}{4} * \frac{3}{2}$ = $\frac{7*(-1)}{4*2}$ = $-\frac{7}{8}$

d) $\frac{3}{4} : \frac{-1}{3}$ = $\frac{3}{4} : \frac{3}{-1}$ = $-3 \frac{3}{4}$ = $-\frac{9}{4}$

e) $\frac{1}{2}\ * \frac{3}{2} + \frac{-1}{3}$ = $\frac{1}{2} * \frac{3}{2}$ = $\frac{3}{4} - \frac{1}{3}$ = $\frac{9-4}{12}$ = $\frac{5}{12}$

Espero que sua dúvida tenha sido saciada, qualquer dúvida estou a disposição!

Bons estudos!