Question

6666-(66:6+x-6666:6+666:6)ori 6=666

Answer 1

(66:6+X-6666:6+666:6)x6=6666-666
(66:6+X-6666:6+666:6)=6000:6
(11+X-1111+111)=1000
11+X-1111=1000-111
11+X=889+1111
X=2000-11
X=1989

Answer 2

6666-(66:6+X-6666:6+666:6)x6=666
6666-(11+X-1111+111)x6=666
(11+X-1111+111)x6=6666-666
(11+X-1111+111)x6=6000
11+X-1111+111=6000:6
X-1111+111=1000-11
X-1111+111=989
X-1111=989-111
X-1111=878
X=878+1111
X=1989