in a two step equation?

Question

y-x-4
-y-x=3

Answer 1

Is -4 supposed to be =4?
If it is, y-x=4 is y=4+x.
-y-x=3 is y=-3-x
Thus, 4+x=-3-x
4=-3-2x
-2x=7
x=-7/2
Next, substitute x for -7/2.
y+7/2=4
y=1/2
Check with -1/2+7/2=3.
Thus, x=-7/2 and y=1/2.

Answer 2

Hi,

I assume the first equation was y - x = 4 with an equals sign before the 4.

Add these equations just the way they are written and the y terms will drop out giving you the equation -2x = 7. Solving this, x = -7/2. Plugging this back into either equation for x, you can solve for y.
-y - (-7/2) = 3. This becomes -y + 7/2 = 3. subtracting 7/2 from each side, you get -y = -1/2. This solves to y = 1/2.

So if I guessed the original equation correctly, your answer is x = -7/2 and y = 1/2.

Answer 3

y - x = 4
-y - x = 3

You can solve this system of equations by elimination; add the equations together and the y variables will cancel themselves out. Look:

(y - x) + (-y - x) = 7
-2x = 7
Therefore, x = -7/2

Now that we have x, we can get y.

y - x = 4
y - (-7/2) = 4
y +7/2 = 4
y + 7/2 = 8/2
y = 1/2

Therefore, x = -7/2, y = 1/2.

Answer 4

y-x-4-y-x=3 is equlvalent to -2x = 7

or if you intended to write the equation as y-x=4 and -y-x=3,
then -2x=7
and y = 15

Answer 5

y=1/2
x=-7/2

Answer 6

if yur equation is y-x=4
and -y-x=3
and yur asked to find x and y
yur answer is:
x=-3.5
and y=0.5
put in those values and substitute
the answer above me is WRONG

Answer 7

y-x-4 I assume you meant y-x=4
-y-x=3 add
-2x=7 divide by 2
x=-3.5
-y-(-3.5)=3
subtract 3.5
-y=-.5 dividy by -1
y=.5

(-3.5, .5)

Answer 8

that doesn't make sense.. is that exactly how it looks in the book?

Answer 9

?