2x+4y=0 3x+y=10 So what we want to do is get y onto one side by itself using whatever equation you like. So I'm taking 2x+4y=0 and subtracting 4y from both sides So we end up with 2x=4y Divide both sides by four 2/4x is 1/2 x So we get 1/2x=y Take this and plug it into the other equation 3x+y=10 3x+1/2x=10 Add your like terms 3 1/2x=10 Putting 3 1/2 as a mixed number we get 7/2 So.. 7/2x=10 Multiply by the opposite of 7/2 on both sides Which is 2/7 this will cancel out the left side. So we end up with X= 10•2/7 X=20/7 Which is 2 and 6/7 as a mixed number.
