Respostas

2014-06-01T12:12:19-03:00
2x[3+4x(5-1)+9÷3]
2x[3+4x(4)+3]
2x[3+16+3]
2x22
44
2 5 2
2014-06-01T12:15:30-03:00

2x[3+4x(5-1)+9-3]
2x[3+4x4+3]
2x[3+16+3]
2x22
44