24(2x+1)=5(y-1) x+5y=23 x=23-5y 24(46-10y+1)=5(y-1) 1128-240y=5y-5 -240y-5y=-1128-5 -245y=-1133 y=(-1133)/(-245) y =4,624 x=23-5y x=23-5*4,624=23-23,12 x=-0,12