Hello please help as I do not understand and if it’s possible please include pictures. Spam or just random numbers will be reported please help :))

1. convert. simplify your answer and write it as a proper fraction or as a whole or as a mixed number. 4oz=_ pounds 2. find 1/3 of 66

What is always true when two whole numbers are subtracted?

Use the linear combination method to solve the system of equations. explain each step of your solution. if steps are not explained, you will not receive credit for that step. 2 + 9 = −26 −3 − 7 = 13