To solve this system of equations by elimination what operation would we use to eliminate the x variable and find the value of y -6x-4y=2-4x-7y=2

Option A is correct.

Step-by-step explanation:

We have to eliminate x from the given system of equations by solving

-6x -4y=2

-4x-7y=2

We can do this by subtracting 3 times the second equation from 2 times the first equation we get

-12x -8y = 2

12x +21y =- 2

Sign of second equation changed because it is getting  subtracted

Since, we got same quantity of x with opposite signs

Hence, it will get cancelled and so eliminated.

Therefore, Option A is correct.

sorry can't

step-by-step explanation:

i googled though and something came up but it was in science langueage not common english sooo

$25

step-by-step explanation:

25 - 4.50 = 20.5

20.5 / 2 = 10.25

10.25 + 10 = 20.25

20.25 - 12.50 = 7.75

therefore the answer is $25 as shown as the first number.