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Posted by **Urgent PleaseHelp** on Monday, April 23, 2012 at 8:25pm.

Y-x=4

So far I have done this. Please tell me the next steps. Thank you.

X=Y-4

Y=3(4-Y)

Y=12-3Y

- Math Help -
**Reiny**, Monday, April 23, 2012 at 9:01pmfrom

x = y-4 , sub in y=3x

x = 3x - 4

x - 3x= -4

-2x = -4

divide both sides by -2

x = 2

sub into y=3x

y = 3(2) = 6

x = 2, y = 6

your second last line

Y=3(4-Y)

should have said:

Y = 3(y-4)

then

y = 3y - 12

-2y = -12

y = 6, just like I had mine

- Math Help -
**Bosnian**, Monday, April 23, 2012 at 9:03pmy = 3 x

y - x = 4

3 x - x = 4

2x = 4 Divide both sides by 2

x = 4 / 2 = 2

y = 3 x

y = 3 * 2 = 6

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