need help on a step by step approach to doing these and similar

http://img179.imageshack.us/img179/548/sum.jpgi can do the basic ones but when they add fractions etc i get lost

Printable View

- Sep 9th 2009, 01:44 AMrealisticsimplify
need help on a step by step approach to doing these and similar

http://img179.imageshack.us/img179/548/sum.jpgi can do the basic ones but when they add fractions etc i get lost - Sep 9th 2009, 01:48 AMmathaddict
- Sep 9th 2009, 02:07 AMrealistic
- Sep 9th 2009, 05:49 AMmathaddict