Question

( )( )天工 道古( )( )

Answer 1

巧夺天工 道古论今 怡然自得 深情述说

X-3=9

x=9+3

=12

2(X+18)=80

x+18=40

x=40-18

=22

2X+3X=15

5x=15

x=15/5

x=3