Plz answer fast. find the solution of this system of the equations -3x-7y=-66 -10x-7y=-24

For this, I will be using the elimination method. So with this, subtract the second equation from the first equation to get . From here you can solve for x.

For this equation, just divide both sides by 7, and your first answer is

Now that we have the value of x, substitute it into either equation to solve for y:

In short, x = -6 and y = 12.

Given system of equations:

-3x - 7y = -66

-7y = -66 + 3x

y = 66/7 - 3/7x

-10x - 7(66/7 - 3/7x) = -24

-10x - 66 + 3x = -24

-7x - 66 = -24

-7x = 42

x = -6

-3(-6) - 7y = -66

18 - 7y = -66

-7y = -84

y = 12

Your answer is:

c is the answer

step-by-step explanation:

-2x + 7 = 7

subtract 7 from both sides.

-2x = 0

divide both sides by -2.

x = 0