What is a possible first step to eliminate the variable x in the following system?
2x – 7y = 3
4x + 5y = –2

a. Multiply the first equation by 7.

b. Multiply the first equation by –2.

c. Multiply the second equation by 2.

d. Multiply the second equation by –3.

Question

What is a possible first step to eliminate the variable x in the following system?
2x – 7y = 3
4x + 5y = –2

a. Multiply the first equation by 7.

b. Multiply the first equation by –2.

c. Multiply the second equation by 2.

d. Multiply the second equation by –3.

anonymous · Answer

i believe the answer is B. because in order to make the first equation similar to the second you must multiply by the coefficiant.

anonymous · Answer

just notice

$$\large 4x=-2(2x)$$

anonymous · Answer

Yep u got it already......:)

anonymous · Answer

yeah i just needed a justification but thank you very much :D

anonymous · Answer

yw......:)