## anonymous 5 years ago 4/5 = x/75 pls help me im desperate

1. anonymous

Multiply both sides by 75.

2. anonymous

k so do i do anything after tht?

3. anonymous

Just try to simplify the answer.

4. anonymous

k wait um i just learned this so when u say both sides?

5. anonymous

After you multiply by 75, you get: ${4 \over 5}(75)=x$

6. anonymous

7. anonymous

x=75 times 4/5

8. anonymous

ohhhhhh k thank u sooo much i hate my math hw this is just the 2nd prob so im in 4 it lol

9. anonymous

10. anonymous

so i got my anwnser and i think x=300

11. anonymous

300 is too much :)

12. anonymous

oh so even if its simplifiying prportions

13. anonymous

14. anonymous

7th

15. anonymous

AnwarA u there?

16. anonymous

Yeah.

17. anonymous

k

18. anonymous

You still have another question?

19. anonymous

yah but its alot and i dont wanna bother u

20. anonymous

It's alright. I still have got few minutes.

21. anonymous

really thanks!

22. anonymous

7/8 = 56/n a. 8n=56 b. 7n=56 c. 7n=448 or d. none of these

23. anonymous

Have you heard about cross multiplication?

24. anonymous

yah but im not 2 good @ it

25. anonymous

It's ok. You soon will be.

26. anonymous

Let me rewrite it: ${7 \over 8}={56 \over n}$ Now multiply the top of the left side by the bottom of the right side, and the top of the right side by the bottom of the left side.

27. anonymous

i did 58$\times$ 8 and gt 464

28. anonymous

So you multiply 7 by n and 56 by 8, you then get: 7n=56*8 But as you said 56*8=448. So the answer would be: 7n=448

29. anonymous

Is that clear?

30. anonymous

ohhh thank u

31. anonymous

You're welcome. Wish you the best luck.

32. anonymous

thanks

33. Gina

$4/5=x/75, 5x=4*75 then x =4*75/5$

34. Gina