Question

Frações

F)3/16+9/4
G)8/9-5/6
H)4/7+5/14
I)9/15-7/15
J)3/2+1/4+5/6

Answer 1

Resposta:

$F)~mmc=16:~\frac{3}{16}+\frac{9}{4}=\frac{3+36}{16}=\frac{39}{16}\\ \\G)~mmc=18:~\frac{8}{9}-\frac{5}{6}=\frac{16-15}{18}=\frac{1}{18}\\ \\H)~mmc=14:~\frac{4}{7}+\frac{5}{14}=\frac{8+5}{14}=\frac{13}{14}\\ \\I)~mmc=15:~\frac{9}{15}-\frac{7}{15}=\frac{9-7}{15}=\frac{2}{15}\\ \\J)~mmc=12:~\frac{3}{2}+\frac{1}{4}+\frac{5}{6}=\frac{18+3+10}{12}=\frac{31}{12}$