Having a problem figuring out how to solve these types of math problems, any would be appreciated. use substitution to solve the system the explanations provide in aleks does not make sense to me. -3x + y = -11 2x + 5y = 30

1) -3x + y= -11
2)2x + 5y = 30

Either both x or both y have to be equal
So 1) can be multiplied by 5 to get y to become 5y

Therefore 1) becomes 3) -15x + 5y = 30

So you do 2) - 3)

To get 17x=85
Divide both sides by 17 to get x=5

Then to get y sub 5 into 2x + 5y= 30

2*5 + 5y = 30

10 + 5y = 30

-10. -10

5y = 20

/5. /5

Y= 4

So you get that y=4 and x=5

The answer to that is 6