..Question #1:

Solve the following system of equations using the elimination method.

3x - 9y =10 (1)

4x + y = 7 (2)

Mr F says: Multiply equation (2) by 9 and add the result to equation (1).

...

Question #2:

Solve the following system of equations.

x + 3t =1

4x + 15t = 2

Mr F says: Multiply equation (1) by -4 and add the result to equation (2).

Any help or comments towards solving these would be greatly appreciated.

Thanks!