Question

efetue
b) 2/5+1/6
c)5/6-10/12
d) 1/2+1/3+1/4​

Answer 1

Resposta:

não sei

Explicação passo a passo:

confia no pai

Answer 2

Resposta:

b)  $\frac{17}{30}$

b)   0

c)  $1\frac{1}{12}$

Explicação passo a passo:

b) $\frac{2}{5} + \frac{1}{6}$

=  $\frac{2(*6)}{5(*6)} + \frac{1(*5)}{6(*5)}$                    

=  $\frac{12}{30} + \frac{5}{30}$

=  $\frac{17}{30}$

c) $\frac{5}{6} - \frac{10}{12}$

= $\frac{5(*2)}{6(*2)} - \frac{10}{12}$

= $\frac{10}{12} - \frac{10}{12}$

= 0

d) $\frac{1}{2} + \frac{1}{3} + \frac{1}{4}$

=   $\frac{1(*6)}{2(*6)} + \frac{1(*4)}{3(*4)} + \frac{1(*3)}{4(*3)}$

=   $\frac{6}{12} + \frac{4}{12} + \frac{3}{12}$

= $\frac{13}{12}$

= $\frac{12}{12} + \frac{1}{12}$

= $1\frac{1}{12}$