Need asap will give brainliest ! solve the system of equations x-2y=3 3x+y= -5 a) (-2,-1) b) (-1,-2) c) (7,2) d) (2,7)

B) (-1,-2)

Step-by-step explanation:

x-2y=3

3x+y=-5

The first step would be to rearrange an equation in order to be able to use the Substitution method.  Personally, I believe it is easiest to rearrange the first one:

x-2y=3

x=3+2y

Now that the equation has been rearranged, the Substitution method can be used:

3(3+2y)+y=-5

9+6y+y=-5

9+7y=-5

7y=-14

y=-2

Now that we have solved for y, we already kind of know the answer, since only one option has this y value, but it doesn't hurt to double check by plugging in "y" into an equation:

x=3+2(-2)

x=3-4

x=-1

The solution for the system of equation would be (-1,-2)