(2x + 5y = 31
1 x + 6y = 40
Which of the following linear equations could replace
x + 6y = 40 to create a system with infinitely many solutions?

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Find the solution of each of the following.

Aschool allots ? 1500 to spend on a trip to the theatre. theatre tickets have a regular cost of ? 55 each and are on offer for 1 5 off. a train ticket for the day will cost ? 12 each. if 2 teachers and the maximum number of students attend, how much money will the school have left over?