Answers

2014-07-30T21:35:38+08:00
Easy peassy lemon squizzy

1x/2x

or

1x
__
2x
0
its only 1/2 becausse you need to cancel also x
2014-07-31T19:05:19+08:00
....................... 2x/4x= 1x/2x
0