Answer:
2; 3; 80; 1; -40; 1; -240 (answered from left to right then the next line)
Explanation:
This is a question on fractions and solving algebraic equations. If you wish to venture further into it/understand this topic better, you may want to follow my Instagram account (learntionary), where I post some of my own notes on certain topics and also some tips that may be useful to you :)