Question

/2-2/3-6/5=

1/2-2/3-6/5=

me ajudem pfv de preferência a letra C, mais se quiserem responder a letra A,B,C,D,E eu agradeço muito muito mesmo❤❤​​

Answer 1

Resposta:

$a)3$ , $b)\frac{31}{10}$ , $c)\frac{-41}{30}$, $d)\frac{5}{21}$ , $e)\frac{2}{9}$

Explicação passo a passo:

$a)\frac{8}{5} +\frac{7}{5}$ ➳ $\frac{8+7}{5}$ ➳ $\frac{15}{5}$ ➳ $\frac{15^{:5} }{5^{:5} }$ ➳ $\frac{3}{1}$ ➳ $3$

$b)\frac{8}{5} +\frac{3}{2}$ ➳ $\frac{8.2+3.5}{5.2}$ ➳ $\frac{16+15}{10}$ ➳ $\frac{31}{10}$

$c)\frac{1}{2} -\frac{2}{3} -\frac{6}{5}$ ➳ $\frac{1.3-2.2}{2.3} -\frac{6}{5}$ ➳ $\frac{3-4}{6} -\frac{6}{5}$  ➳ $\frac{-1}{6} -\frac{6}{5}$  ➳ $\frac{-1.5-6.6}{6.5}$ ➳ $\frac{-5-36}{30}$ ➳ $\frac{-41}{30}$

$d)\frac{1}{3} -\frac{2}{7} +4$ ➳ $\frac{1.7-2.3}{3.7} + 4$ ➳ $\frac{7-6}{21}+4$ ➳ $\frac{1}{21} +4$ ➳ $\frac{5}{21}$

$e)\frac{1}{2} -\frac{4}{9} +\frac{1}{6}$ ➳$\frac{1.9-4.2}{9.2} +\frac{1}{6}$ ➳ $\frac{9-8}{18}+\frac{1}{6}$ ➳ $\frac{1}{18} +\frac{1}{6}$ ➳ $\frac{1.6+1.18}{18.6}$ ➳ $\frac{6+18}{108}$ ➳ $\frac{24}{108}$ ➳ $\frac{24^{:6} }{108^{:6} }$ ➳ $\frac{4}{18}$ ➳ $\frac{4^{:2} }{18^{:2} }$ ➳ $\frac{2}{9}$