Question

Por favor urgente
Calcule as seguintes frações

Answer 1

Resposta:

$A)\frac{2}{3} .\frac{4}{7}$  ➳ $\frac{2.4}{3.7}$ ➳ $\frac{8}{21}$

$B)\frac{8}{12} .\frac{1}{6}$ ➳ $\frac{8^{:2} }{12} .\frac{1}{6^{:2} }$ ➳ $\frac{4}{12} . \frac{1}{3}$ ➳ $\frac{4.1}{12.3}$ ➳ $\frac{4}{36}$ ➳ $\frac{4^{:4} }{36^{:4} }$ ➳ $\frac{1}{9}$

$C)\frac{17}{3} +\frac{1}{7}$ ➳ $\frac{17.7+1.3}{7.3}$ ➳ $\frac{119+3}{21}$ ➳ $\frac{122}{21}$

$D)\frac{2}{4} +\frac{5}{3}$ ➳ $\frac{2.3+5.4}{4.3}$ ➳ $\frac{6+20}{12}$ ➳ $\frac{26}{12}$ ➳ $\frac{26^{:2} }{12^{:2} }$ ➳ $\frac{13}{6}$

$E)\frac{1}{3} -\frac{2}{5}$ ➳ $\frac{1.5-2.3}{3.5}$ ➳ $\frac{5-6}{15}$ ➳ $\frac{-1}{15}$

$F)\frac{4}{3} :\frac{6}{7}$ ➳ $\frac{4^{:2} }{3} :\frac{6^{:2} }{7}$ ➳ $\frac{2}{3} :\frac{3}{7}$ ➳ $\frac{2}{3^{:3} }:\frac{3^{:3} }{7}$ ➳ $\frac{2}{1} :\frac{1}{7}$ ➳ $\frac{2.1}{1.7}$ ➳ $\frac{2}{7}$

$G)\frac{7}{9} :\frac{1}{2}$ ➳ $\frac{9}{7} :\frac{2}{1}$ ➳ $\frac{9.2}{7.1}$ ➳ $\frac{18}{7}$

(ﾉ◕ヮ◕)ﾉ*:･ﾟ✧ Espero ter ajudado, Bons estudos ◕3◕