Solve the system by the elimination method. 
 2a + 3b = 6 
 5a + 2b - 4 = 0 
 multiply thru the top equation by 2
 Multiply thru the bottom equation by 3
4a + 6b = 12
 15a+ 6b = 12
 
 Subtract and solve for "a":
 11a = 0
 a = 0
 Solve for "b" using 2a + 3b = 6
 2*0 + 3b = 6
 b = 2