C chelle New member Joined May 28, 2012 Messages 3 May 30, 2012 #1 x+y=48 2y-x=48 Okay so there are steps to follow is this the right start? x+y=48 x+y-x=48-x x=48-x now where to???
x+y=48 2y-x=48 Okay so there are steps to follow is this the right start? x+y=48 x+y-x=48-x x=48-x now where to???
W wjm11 Senior Member Joined Nov 13, 2004 Messages 1,417 May 30, 2012 #2 chelle said: x+y=48 2y-x=48 Okay so there are steps to follow is this the right start? x+y=48 x+y-x=48-x x=48-x now where to??? Click to expand... That should be y = 48 - x, not x=48-x. Since you have solved the first equation in terms of y, you can now substitute into the second equation: 2y-x=48 2(48 - x) - x = 48 You now have an equation with only one variable in it, and you can now solve for that variable. Continue.
chelle said: x+y=48 2y-x=48 Okay so there are steps to follow is this the right start? x+y=48 x+y-x=48-x x=48-x now where to??? Click to expand... That should be y = 48 - x, not x=48-x. Since you have solved the first equation in terms of y, you can now substitute into the second equation: 2y-x=48 2(48 - x) - x = 48 You now have an equation with only one variable in it, and you can now solve for that variable. Continue.
