How to reduce 66/77 in its simplest form

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

Which number completes the inequality? 2/3 < _ < 7/9

The graph and table shows the relationship between y, the number of words jean has typed for her essay and x, the number of minutes she has been typing on the computer. according to the line of best fit, about how many words will jean have typed when she completes 60 minutes of typing? 2,500 2,750 3,000 3,250