Question 44653
elimination method
2x/3 + 3y/4 =11/12..........I
x/3 + 7y/18 =1/2..........II
wouldn't 12 be the common denominator in the first equation
YES SO MULTIPLY WITH 12...EQN.I 
8X+9Y=11...............III
SIMILARLY MULTIPLY EQN.II WITH 18
6X+7Y=9..............IV
7*EQNIII-9*EQN.IV
56X+63Y-72X-63Y=77-81
-16X=-4
X=1/4...PUT IN EQN.III
8*1/4+9Y=11
9Y=11-2=9
Y=1