Question

In elemination method we should subtract a bigger equation by smaller or smaller equation by bigger . i didnt understand that . bigger equation ....(2) smaller equation....(3) THEN WHAT SHOULD BE SUBTRACTED IS IT eq. (2) - eq. (3) OR eq. (3) - (2).. PLEASE REPLY SOON!!!!!!.

Answer 1

It can be done in either ways. Equation 3 - eq.1 is also right. Eq. 1- eq.3 is also correct. Depends on whether you are subtracting or adding. While subtracting,the signs are changed,adding it remains the same. Cheers!