Question

a 1-(-3\4+1\6)
b (4-3\2)+(-1\2-4\3)
c 1,65-3,5+2
me ajudem pfv......

Answer 1

a) 1 - (-3/4 + 1/6)m.c.m(4,6)=2x2x3=12
1 - (-9 + 2/12)
1 - (-7/12)
1 + 7/12. m.c.m=12
12+7/12
19/12

b) (4 - 3/2 ) + (-1/2 - 4/3)
(8 - 3/2) + (-3 - 8/6)
(5/2) + ( -11/6)
5/2 - 11/6
15-11/6
4/6 (÷2)
2/3

c) 1,65 - 3,5 + 2
-1,85 + 2
0,15

Answer 2

A
-3/4 + 1/6
MMC = 12
( -9 + 2 )/12 = - 7/12
REESCREVENDO
1/1 - ( - 7/12) =
1/1 + 7/12 =
MMC = 12
(12 + 7)/12  = 19/12 ****
B
4/1 - 3/2 =
MMC = 2
( 8 - 3)/2 =5/2 ****
- 1/2 - 4/3 =
MMC = 6
( -3 - 8)/6 = - 11/6 ***
REESCREVENDO
5/2 + ( - 11/6) =
5/2 - 11/6 =
MMC = 6
( 15 - 11)/6 =  4/6 = 2/3 ****
C
1,65 - 3,5 + 2 = 
1,55 + 2 =3,55 ***