Question

help

Answer 1

simplify 5\[\frac{ 5x }{ 4 } -\frac{ 2x }{ 5 }\]

Answer 2

You need to find the LCM of this. what number does both 4 and 5 go into evenly? the lowest one?

Answer 3

Treat as you would a normal fraction

Answer 4

2*2*5=20

Answer 5

Ok, yes it is 20. what do you have to multiply the 4 in the first fraction's denominator by to get 20?

Answer 6

but am sorry i thought i was supposed to cross multiply

Answer 7

No you can only cross multiply when there is an = sign in between the fractions. You multiply the 4 by 5 to get 20, and you multiply the 5 by 4 to get 20. Here's what it looks like in application\[(\frac{ 5 }{ 5 })\frac{ 5x }{ 4 }-(\frac{ 4 }{ 4 })\frac{ 2x }{ 5 }\]

Answer 8

When you multiply all that out you get two fractions with the same denominator. the whole idea of this problem is to simplify and the only way you can do this is by finding a common denominator and then simplifying from there.

Answer 9

I don't know if it's my connection tonight or what, but everything is taking so so so long and I am going to bed. Here's your problem \[\frac{ 25x }{ 20 }-\frac{ 8x }{ 20 }=\frac{ 17x }{ 20 }\]It doesn't simplify any further. Do you see how that's done?

Answer 10

got it

Answer 11

Very cool! Good work!

Answer 12

what about this one \[\frac{ t }{ 4 }=\frac{ 1 }{2 }+\frac{ 2t }{ 3 }\]