Question

3• {477÷9+2•[10+15•(306÷17-288÷18)]}-79

Answer 1

1) 306÷17=18
2)288÷18=16
3)18-16=2
4)15•2=30
5)10+30=40
6)477÷9=53
7)2•40=80
8)53+80=133
9)3•133=399
10) 399-79=320
rezultatul =320

Answer 2

3×{53+2×[10+15×(18-16)]}-79=
=3×{53+2×[10+30]}-79=
=3×[53+2×40]-79=
=3×133-79=
=320