The first equation has a common factor 2, so we divide through by 2: 3x+5y=6, which we can add to the second equation: 6y=12, so y=2. Put y =2 in either equation: 3x+10=6 or -3x+2=6, so 3x=-4 or -3x=4 (these mean the same), and x=-4/3. The answer: x=-4/3 and y=2.