## anonymous one year ago Evaluate expression for x=4 , y=3 3(x+y)- 3/(x-y) +5 Is the correct answer 13?

1. marcelie

29

2. anonymous

Could you explain this?

3. marcelie

nvm its 3

4. anonymous

XD I'll do it too for a second opinion. :)

5. marcelie

|dw:1442544109613:dw|

6. anonymous

Thats not one of the options......

7. anonymous

It is 3 though... I just did it...

8. anonymous

The optipns are A) -13 B)13 C)29 D)23

9. zepdrix

Ashley was this your equation?$$\large\rm \quad 3(x+y)- \frac{3}{(x-y)} +5$$ Or this? $$\large\rm \quad \frac{3(x+y)- 3}{(x-y)} +5$$ Or something else? :)

10. anonymous

The first one :3

11. anonymous

Oooh! That changes everything! XD

12. zepdrix

Oh :( Ya I guess that's where the confusion was.

13. anonymous

I dont know how to make it all fancy like that cause im new here lol

14. anonymous

XD I'm new too. :) I'll see what I get for my answer.

15. zepdrix

$\large\rm \quad 3(x+y)- \frac{3}{(x-y)} +5$ IF it had been the second one, you would've needed to put brackets around the whole numerator, like this (3(x+y)- 3)/(x-y)+5 But it was the first one, so you entered it perfectly :) We were just being silly.

16. anonymous

XD Indeed. So silly.

17. zepdrix

Just plug in some numbers :D$\large\rm \quad 3(4+3)- \frac{3}{(4-3)} +5$ $\large\rm \quad 3(21)- \frac{3}{(1)} +5$What do you get? :)

18. anonymous

13?

19. zepdrix

WOOPS :O 4+3 = 7, i made a boo boo

20. zepdrix

$\large\rm \quad 3(7)- \frac{3}{(1)} +5$Then,$\large\rm \quad 21- 3 +5$

21. anonymous

23?

22. zepdrix

yay good job \c:/

23. anonymous

So the correct answer is 23 :)