run-on sentences are bad not only in English.
4x+5y+3z=23
3x+2y+z=10
2x+5y-z=9
add the bottom two
add the top and 3 times the bottom, then divide by 10
5x+7y = 19
x+2y = 5
subtract 5 times the bottom from the top
-3y = -6
y = 2
so x = 1 and z = 3
use gauss jordan elimination method tofind solution set of4x+5y+3z=23.3x+2y+z=10.2x+5y-z=9
1 answer
1 answer