Question

What is a possible first step to eliminate the variable x in the following system?

2x - 7y = 3
4x + 5y = -2

Answer 1

you want to get 2x and 4 x to cancel right so one has to be positive and one negative right?

Answer 2

\[-2(2x-7y=3)\]
\[4x+5y=-2\]

Answer 3

now if you distribute the -2 to the top equation what do you get?

Answer 4

@danny562 does this make sense ?

Answer 5

a) Multiply the first equation by -3 and the second equation by 2
b) Multiply the first equation by 3 and the second equation by -2
c) Multiply the first equation by 4 and the second equation by 3
d) All of the above

Answer 6

\[-4x+14y=-6\]
\[4x+5y=-2\]
none of those make the x's cancel are you sure the problem is copied right ?