Question

Help! Frações com expressões:
a) (3/4 x 1/2 + 2/5) +1/4 = ( 3/8 + 2/5) + 1/4 =

b) (2/3 x 1/4) + (1/3 x 1/2) =

c) (5 - 1/2) : (2 - 1/3) =

d) (3 x 5/2) : 1/5 + 1/3) =

e) (3 x 3/4) + (3 x 1/4) =

f) (2/5) ² : (3/5) ³ + 2/6 =

Answer 1

a) $\frac{3}{8} + \frac{2}{5} + \frac{1}{4} = \frac{3}{8} + \frac{2}{5}+ \frac{1}{4}$ =0
b) $\frac{2}{12} + \frac{1}{6} = \frac{4}{12} = \frac{1}{4}$
c) $\frac{10}{2} : \frac{5}{3} =3$
d) $\frac{15}{2}: \frac{8}{15} = \frac{225}{16}$
e) $\frac{9}{4} + \frac{3}{4} =3$
f) $\frac{4}{25}: \frac{27}{125}+ \frac{2}{6} = \frac{20}{27}+ \frac{2}{6} = \frac{38}{54}$

Espero ter ajudado
Tenha um bom dia =)