algebra
posted by
hgjki
.
2a+3b=9
3a+2b=12

algebra 
Seth
what are you support to do.

algebra 
drwls
If you are trying to solve for a and b,
multiply the first equation by 3 and the second equation by 2.
6a + 9b = 27
6a + 4b = 24
Now subtract them
5b = 3
b = 3/5
Now substitute thab b in the first equation
2a + 9/5 = 9
2a = 36/5
a = 18/5