Page 5 - qua2
P. 5
. =1 + =5 .15
+ =4 .16
+5
+ =4
( )( + ) 1 × 4 4 1
+ 5 5 4
+ = = × =
4
1 30 10
3 20
2 20
3 10
C 136 .17
16 60
– 76
– .18
–
– BA
– CB
– DC
– ED
FE
GF
5
