Question

Adição e subtração com denominadores diferentes
A) 8/3+7/3=
B)5/2/ +6/4=
C)17/5-6/5=
D)2/3+5/2=
E)1/5+2/4 =
F)5/8+9/8-3/8=

Answer 1

Resposta:

  $a) \frac{8}{3}+\frac{7}{3}\\\\ \frac{8+7}{3} \\ \\ \frac{15}{3}\\ \\ 5$

            $b) \frac{5}{2}+\frac{6}{4}\\ \\ \frac{5.4+6.2}{2.4} \\ \\ \frac{20+12}{8}\\ \\ \frac{32}{8}\\ \\ 4$

$c)\frac{17}{5}-\frac{6}{5}\\ \\ \frac{17-6}{5}\\ \\ \frac{11}{5}$

$d)\frac{2}{3}+\frac{5}{2}\\ \\ \frac{2.2+3.5}{3.2} \\ \\ \frac{4+15}{6}\\ \\ \frac{19}{6}$

$e)\frac{1}{5}+\frac{2}{4}\\ \\ \frac{1.4+2.5}{5.4}\\ \\ \frac{4+10}{20}\\ \\ \frac{14}{20}$

$\frac{14:2}{20:2}\\ \\ \frac{7}{10}$

$f)\frac{5}{8}+\frac{9}{8}-\frac{3}{8} \\ \\ \frac{5+9-3}{8} \\ \\ \frac{11}{8}$

bons estudos!