Question

Select the best possible first step to solving the system by first eliminating the y variable.

5x – y = 5
7x – 3y = –1

possible answers:
Multiply the first equation by –2 and multiply the second equation by 5.
Multiply the first equation by 2 and multiply the second equation by 5.
Multiply the first equation by 2 and multiply the second equation by –5.
None of the above

Answer 1

possible answers
Multiply the first equation by –2 and multiply the second equation by 5.
Multiply the first equation by 2 and multiply the second equation by 5.
Multiply the first equation by 2 and multiply the second equation by –5.
None of the above

Answer 2

none of above either you multiply upper eqn by 3
or you multiply upper by 7 and lower by 5