Order of operation/Algebra

W.A.L.T use the order of operrations

The past week i have being learning order of operation/algebra/.

I have learnt that algebra and order of operation hae letters instead of empty boxes and it will be useful for some jobs when you are older. I like order operation because sometimes it can be easy to figure out the question. IT was easy when i got the hang of algebra and order of operations but sometimes it can get confusing.

Algebra is important in your life because you can use it anywhere.Here is some questions.

1.2+(9x4)=

2.3x(4+7)=

3. 6x(3+4)=

can you figure them out.