M Maximus New member Jul 8, 2010 #2 8x-9y=32.5 28y-8x=42 adding i and 2 we get 19y=74.5 y=3.92 putting in 1 we get x= 67.78
M M Al-Qadasi New member Jul 11, 2010 #3 Multiply the second equation by four -8x + 28 y = 42 Add it with equation one 19 y = 9.5 y = 0.5 substitute this value in any equation, for example 2 7(0.5) - 2x = 10.5 -2x = 6.5 x = -3.25
Multiply the second equation by four -8x + 28 y = 42 Add it with equation one 19 y = 9.5 y = 0.5 substitute this value in any equation, for example 2 7(0.5) - 2x = 10.5 -2x = 6.5 x = -3.25
