SOLUTION: Show all your work Solve the system of equations using the Addition method. 2a + 3b = -1 3a + 5b = -2

Algebra ->  Linear-equations -> SOLUTION: Show all your work Solve the system of equations using the Addition method. 2a + 3b = -1 3a + 5b = -2       Log On


   

Question 150290: Show all your work
Solve the system of equations using the Addition method.
2a + 3b = -1
3a + 5b = -2

Answer by mangopeeler07(462) About Me  (Show Source):
You can put this solution on YOUR website!
2a + 3b = -1
3a + 5b = -2

Multiply the first equation by -3/2
-3a+-9b/2=-1
3a+5b=-2

Add them
1/2b=-3

Multiply by 2
b=-6

Plug that in
3a+5(-6)=-2

3a-30=-2
3a=28
a=9 and 1/3

a=28/3
b=-6