7J
8
j x7J
3b Sf 4g
9
arepresentthe unknownnumber
a
3Cbtq
2
2C 3 t C 1
6
COX3
O
abut
4
2
6
1
t C1 2
t
3
b and
t
5
4
2
I
10x
3x t 2x t40C be
9 x Ibc
2x
4C t 6C t 3d Sd 3
10c t 8D 3
3 2x t 10
6x 2x 3 t 10
6
4x t 7
xZ
2x y t 3 2
8
ll
qrepresent the
unknown
x represent the unknown