2X + 5Y = 19 , 3X + 3Y = 15

3x-2y=15

__3x+2y=7__6x = 22 therefore x = 22/6 = 3.67 now substitute the x into either one or both to solve for y and you should get the same answer for y. 3(22/6) - 2y = 15 ==> 66/6 - 2y = 15 ==> 11 - 2y = 15 ==> -2y = 4 ==> -y = 2 ==> y = -2 3(22/6) + 2y = 7 ==> 66/6 + 2y = 7 ==> 11+ 2y = 7 ==> 2y = -4 ==> y= -2 It is confirmed that x=22/6 or 3.67 and y= -212X + Y = 174 , 8X - 2Y = 36

X + Y = 10, 3X + Y = 12