What is 5/9 + 1/5= ??

What is best way to getting answer for my exam is

Two students were asked if they liked to read. is this a good example of a statistical question? why or why not? a yes, this is a good statistical question because a variety of answers are given. b yes, this is a good statistical question because there are not a variety of answers that could be given. c no, this is not a good statistical question because there are not a variety of answers that could be given. no, this is not a good statistical question because there are a variety of answers that could be given

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers