What is a possible first step to eliminate a variable in the following system?
7x – 9y = 2
3x – 6y = –4

a. Multiply the first equation by 2 and the second equation by –3.

b. Multiply the first equation by –3 and the second equation by –2.

c. Multiply the first equation by 7 and the second equation by 3.

d. Multiply the first equation by –2 and the second equation by 4.

Question

What is a possible first step to eliminate a variable in the following system?
7x – 9y = 2
3x – 6y = –4

a. Multiply the first equation by 2 and the second equation by –3.

b. Multiply the first equation by –3 and the second equation by –2.

c. Multiply the first equation by 7 and the second equation by 3.

d. Multiply the first equation by –2 and the second equation by 4.

anonymous · Answer

this question was a little more difficult for me....

amistre64 · Answer

these never do have a suitable answer

amistre64 · Answer

all of those can be a first possible step that doesnt detract from the final outcome

anonymous · Answer

what does that mean? one has to be the answer..

amistre64 · Answer

it means that scaling and equation doesnt effect the results in the end; so it doesnt matter what you start out scaling them by ....

amistre64 · Answer

multiply the top by -3/7 and the bottom by 1 ....  why aint that one in there?

amistre64 · Answer

jite; multiply the whole thing, not just a side of it

mathslover · Answer

yes but the options do not have that .. @jiteshmeghwal9 
they have:

$$\large{7(7x-9y)}$$and $$\large{3(3x-64)}$$

jiteshmeghwal9 · Answer

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