Question

2 7
-- + --
5x 10x


Is it
A) 11
---
10x

OR

B) 11
--
10x^2

Answer 1

Find the LCM here

2/5x + 7/10x

\[\frac{ 2 }{ 5x } + \frac{ 7 }{ 10x }\]

NOW FIND LCM by multiplying first term by 2

\[\frac{ 2*2 }{ 5x * 2 } + \frac{ 7 }{ 10x }\]

NOW JUST CALCULATE NORMALLY BECAUSE THE DENOMINATOR IS THE SAME!! :D

\[\frac{ 4 }{ 10x } + \frac{ 7 }{ 10x }\]

\[ = \frac{ 11 }{ 10x }\]

Understood this? :)