x-3/5 -y+1/2=1-x+y 4x-1/3-y-3/6=-2x+2y x-y+x-y=3/5-1/2 4x-y-2y+2x=1/3+3/6 2x-2y=6/10-5/10 6x-3y=5/6 2x=6/10-5/10+2y 3(6/10-5/10+2y)-3y=5/6 2x=6/10-5/10+2y 18/10-15/10+6y-3y=5/6 2x=6/10-5/10+2y 3y=54/30-45/30+25/30 2x=6/10-5/10+2y 3y=34/30 2x=6/10-5/10+2y y=34/90 2x=6/10-5/10+68/90 y=34/90 2x=54/90-45/90+68/90 y=34/90 2x=77/90 y=34/90 x=144/90 y=34/90
( x-3/5 - y+1/2 = 1-(x-y) /*10 (4x-1/3 - y-3/6 = -2(x-y) /*6 ( 2(x - 3) - 5(y+1) = 10 - 10(x-y) ( 2(4x - 1) - (y - 3) = -12(x - y) ( 2x - 6 - 5y - 5 = 10 - 10x + 10y ( 8x - 2 - y + 3 = -12x + 12y ( 2x - 5y + 10x -10 y = 10 + 6 + 5 ( 8x - y +12x - 12y = 2 - 3 ( 12x - 15y = 21 /:3 ( 20x - 13y = -1 ( 4x - 5y = 7 /*(-5) ( 20x - 13y = -1 ( -20x + 25y = -35 ( 20x - 13y = -1 _______________ 25y - 13y = -35 - 1 12y = - 36 /:12 y = - 3 4x - 5y = 7 4x - 5*(-3) = 7 4x + 15 = 7 4x = 7 - 15 4x = -8 /:4 x = -2 ( x = -2 ( y = -3
