(A(으)ㄹ 겸) B(으)ㄹ 겸해서 C하다
means doing C in order to do A and B.
For example,
옷도 살 겸 친구도 만날 겸해서 강남역에 갔다 왔어요. (I went to Gangnam station in order to see a friend and buy some clothes)
전시회도 볼 겸 영화도 볼 겸해서 종로에 갔는데 영화관에 사람이 너무 많아서 영화는 못 봤어요. (I went to Jongno in order to watch a movie and see an exhibit, but I could not see a movie becuase there were too many people at the theater.
A: 어머, 오빠. 이 시간에 회사에 웬일이야? (Hey, what brings you here to my office?)
B: 이 근처에 볼일이 있어서 왔다가 네 얼굴도 볼 겸 점심 도시락도 갖다 줄 겸해서 왔어. (I have something to do near here, I just (came to) want to see you and bring you a lunch box.)
친구 결혼식도 볼 겸 바다도 볼 겸해서 부산에 갔었어요. (I went to Busan to attend my friend’s wedding and to see the ocean.)
요리 연습도 할 겸 아이들도 먹일 겸해서 갈비찜을 만들어 봤어요. (I made Galbi stew in order to practice cooking and to feed my kids.)
Funkorean4u.com 
Hello, teacher.
Do you teach Korean language online or email? I want to learn it. It is difficult to find class and I don’t have much time to go learning.
I have finished 세종한국어4 but I have never practiced it so i can’t speak it or good at listening to it.
Hi Tanaksimple, I do teach students online, unfortunately not this semester. Could you please send me an email in May if you are still interested?
Hello, Is there a post about grammar principle on how do I say things like “I have no money to buy food” or “I have no time to go to the cinema”. Translator says 저는 음식을 살 돈이 없어요, but I cannot find any explanation why ㄹ is used or is this a rule.
That is the future tense for (으)ㄴ/는/(으)ㄹ noun, you can look at this post. I haven’t write for the future tense which is (으)ㄹ, but you can learn the use from the post.
https://wp.me/p3ZKP3-at
Thank you, but would it be possible for you to write a post about it (maybe with differences between tenses)? I can’t understand where is future in this sentence. Shouldn’t it just be “음식을 사는 것을 돈이 없어요.”?
The future part is (으)ㄹ. 는 것 = 는 noun have the same grammar 는 which is a modifier. You can change 는 into 은(past) or 을(future).
For example,
음식을 먹는 것을 좋아해요. I like EATING.
제가 오늘 산 것을 잃어버렸어요. I lost things THAT I bought today.
오늘 살 것이 너무 많아요. I have too many things TO buy.
음식을 살 돈이 없어요. I don’t have money TO buy.
시간이 없는 사람이 많아요. There are a lot of people WHO don’t have time.
오늘 집에 간 사람이 누구예요? Who is the person WHO went home today?
I assumed you only learned 는 것 as one thing, but you will see more sentence like these. Hope my explanation will help you understand.
Thank you a lot for the explanation. I never looked at it this way.
You are very welcome! I am glad that I helped you!
why is 도 used in all of these sentences? like in the last one for instance, what use does the 도 have in 요리 연습도? why is it there?
Because you are doing two actions(A and B) at the same time. 도 means ‘also’.
Ah I see! Thank you for the quick response!