math
posted by mace on .
solve the following system of equations
8x+9y= 19
3x+7y= 24
x=
y=

You want to cancel one variable
Let's cancel the x's. 8 and 3 have a LCM, which is 24
3(8x + 9y= 19)= 24x + 27y= 57
8(3x + 7y= 24)= 24x + 56y = 192

0 + 83y= 249
83y= 249
y= 3
Plug into the first equation to figure out what x is now.
8x + 9(3)= 19
8x  27= 19
8x= 8
x= 1