mathmatic-subsitition

I will send a picture of the questions, maybe around 10 -12 questions.

time limit is 1 hour and 55 minute.

start from 15hours after, which is tomorrow. USA California time 10:10 am

you can take a picture and send me back one question by one question. I also need to write down the steps about how to solve it. so please send me the draft paper too