Question 1009597
3x+3y=15 Multiply both sides by 2: 6x+6y= 30
2x+6y=22 Multiply both sides by -3: -6x-18y= -66
Now add those numbers:
6x+6y= 30
+
-6x-18y= -66
_ _ -12y= -36 
Divide both sides by -12:
y= 3 Now let's find x, let's use the first equation:
3x+3(3)= 15
3x+9= 15
3x= 6
x= 2 Now, to find out if we have the right answer, let's use these numbers in the second equation.
Check:
2(2)+6(3)= 22
4+18= 22 
22= 22 We have the correct answer