Question

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

4x + 9y = 21
3x – 8y = 1

Choices:




A.Multiply the first equation by –3 and multiply the second equation by –4.

B.Multiply the first equation by 8 and multiply the second equation by 9.

C.None of the above

D.Multiply the first equation by 3 and multiply the second equation by 4.

Answer 1

b will match up the coefficients of the y so when you add it will drop out

Answer 2

so the answer is B?

Answer 3

what step would YOU do first?