Sir on the class work I was in choir .. But on one of the last steps your subbing in x=3 how so ?
Sorry that is a typo. X=4
The choir were great today. Loved the closing song
Mistake now corrected on site
For my homework part one I got an answer of 3x=17 do I put a 0 (zero) where there is not a variable eg (x,y,z) ?
Yes it is good to put 0x etc if there is no value to line up in the elimination step. In q. 21 part 1 x = 3
Thanks sir :) that's grand