1+1-2+5-3+6-6+2x2=10 is this right or wrong

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

240 seventh graders and two-thirds of the students participate in after-school activities how many students participate in after-school activities

:)i need to know on which ones are corresponding, alternate interior, alternate exterior, or none of these.