Question

http://prntscr.com/9fknio

Answer 1

Let's start by the subtraction part.

Can you take the LCM?

Answer 2

\[\frac{ 325 }{ x }-\frac{ 325 }{ x+15 }=\frac{ 325(x+15) }{ x(x+15) }-\frac{ 325x }{ x(x+15) }\]

\[=\frac{ 325(x+15)-325x }{ x(x+15) }=\frac{ 4875 }{ x(x+15) }\]

Answer 3

is that correct?

Answer 4

Very well done!

Answer 5

thnx. what about part d?

Answer 6

Plug in x=50

Answer 7

do i plug it into this \[\frac{ 487 }{ x(x+15) }\]

Answer 8

\[\frac{ 4875 }{ 50(50+15) }=\frac{ 195 }{ 2(15+50) }=\frac{ 195 }{ 2*65}=\frac{195}{ 130}=\frac{ 3 }{ 2 }\]

Answer 9

is that correct?

Answer 10

Yes :)

Answer 11

Thank u.

Answer 12

yw :)