4/v =3/5 Round your answer to the nearest ten..

Question

bibby · Answer

Use opposite operations. Multiply both sides by $$\frac{ 5 }{ 3 }$$

anonymous · Answer

I still don't get it @bibby  :(

bibby · Answer

Have you learned about cross multiplication?

anonymous · Answer

yeah

anonymous · Answer

@bibby

bibby · Answer

So why can't you approach this problem?

anonymous · Answer

I'm just confused which numbers am I supposed to multiply them by?  How am I supposed to multiply the v by 3/5? @bibby

bibby · Answer

You don't multiply the v side by 3/5. If you want to just do it without understanding the math, you can multiply across the diagonals.

This is what the actual math looks like:$$\frac{ 5 }{3 }*\frac{ 4 }{v } = \frac{ 3 }{ 5 }*\frac{ 5 }{3 }$$

bibby · Answer

if you can see, when you multiply by the flipped fraction, the right hand side cancels out

anonymous · Answer

oh.... thank you :) I understand sorta... you have to use the reciprocal? @bibby

bibby · Answer

Kinda. You use the reciprocal of the side without the variable.

You also have to multiply b oth sides by the same number that way it's still correct according to the rules of algebra

anonymous · Answer

Thanks :) @bibby