Question

RESUELVE Y SU PROCEDIMIENTO
a) 3/4 - 2/3 + 5/9 =
b) ( 4 + 2/5 ) - ( 2 + 3/10 ) =
c) ( 6 - 3/4 ) + ( 3 - 2/3 )

Answer 1

a) 3/4-2/3+5/9
sacamos mcm
mcm:36
9(3)-12(2)+4(5)
_________=
36
27-24+20
_______=
36
23/36

b) (4+2/5)-(2+3/10)
(20+2/5)-(20+3/10)
22/5-23/10=220-115/50=5/50
simplificamos sacando quinta
5/50=1/10

c) (6-3/4)+(3-2/3)
(24-3/4)+(9-2/3)
21/4+7 /3=63+28/12=91/12

Answer 2

⭐$\frac {3}{4} - \frac {2}{3} + \frac {5}{9}$ = $\frac {27}{36} - \frac {24}{36} + \frac {20}{36}$ =

$\frac {27 - 24 + 20}{36}$ = $\frac {23}{36}$

⭐$(4 +\frac {2}{5}) - (2 + \frac {3}{10})$ =

$(\frac {4}{1} + \frac {2}{5}) - (\frac {2}{1} + \frac {3}{10})$ =

$(\frac {20}{5} + \frac {2}{5}) - (\frac {20}{10} + \frac {3}{10})$ = $(\frac {22}{5}) - (\frac {23}{10})$ =

$\frac {22}{5} - \frac {23}{10}$ = $\frac {44 - 23 }{10}$ = $\frac {21}{10}$

⭐ $(6 -\frac {3}{4}) + (3 - \frac {2}{3})$ =

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

$(\frac {24}{4} - \frac {3}{4}) + (\frac {9}{3} - \frac {2}{3})$ = $(\frac {21}{4}) + (\frac {7}{3})$ =

$\frac {21}{4} + \frac {7}{3}$ = $\frac {63 + 28}{12}$ = $\frac {91}{12}$