#2**+2 **

Jenny (a regular poster) explained the terminology to me in this way :

R2 - (1/2)R1 means to take Row 2, subtract (1/2)R1 and put the result in Row 1

(1/2)R1 = 2 3/2 0

So R2 - (1/2)R1 = ( -6 - 2 ) (-3 - 3/2) (12 - 0) = -8 -9/2 12

So.....the martix should be

-8 -9/2 12

-6 -3 12

Melody is correct......this terminolgy is NOT correct.....it should be

R2 - (1/2)R1 → ( where to put the result )

CPhill Sep 27, 2019