What is the result of subtracting the second equation from the first?

-20 + 7y = 10

3x + 7y = 2

Rep

The result is that you eliminate the 7y term and thus can solve for x.

x = - 28/3

y = 30/7

Step-by-step explanation:

-20 + 7y = 10

3x + 7y = 2

subtract ... elimination method

-20 - 3x = 8

-3x = 28

x = - 28/3

-20 + 7y = 10

7y = 30

y = 30/7

Answer: - 4x-2y-x+2y=-5x=-11

Step-by-step explanation:

We have to remember when subtracting equations that we can only subtract like terms. This means that we can only subtract x from - 4x, - 2y from - 2y and 9 from - 2. If we do this, we obtain the equation - 5x + 0=-11. This is because - 4x-x=-5x. When subtracting a negative, we add the term so - 2y - - 2y becomes - 2y + 2y, which cancels to 0. - 2-9=-11. - 11/-5 is 2.2, the value of x.