Question

2×6+8-9+78+67-64+89=?

Answer 1

2*6+8-9+78+67-64+89=
=12-1+78+67-64+89=
=11+78+3+89=
=11+170=
=181

Answer 2

1) 2*6=12
12+8-9+78+67-64+89
2) 12+8=20
20-9+78+67-64+89
3) 11+78=89
89+67-64+89
4) 89+67=156
156-64+89
5) 156-64=92
6) 92+89=181