SOLUTION: Please, if you could, help me with this system of equations. I'm confused on how to eliminate one of my variables. system is: 5a - 15b = 5 10a + 24c = 24 30b + 18c = 12

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: Please, if you could, help me with this system of equations. I'm confused on how to eliminate one of my variables. system is: 5a - 15b = 5 10a + 24c = 24 30b + 18c = 12       Log On


   

Question 533936: Please, if you could, help me with this system of equations. I'm confused on how to eliminate one of my variables.
system is:
5a - 15b = 5
10a + 24c = 24
30b + 18c = 12
solve for a, b, and c
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
multiply 1st eqn by -2 and add to 2nd eqn (eliminating a) ___ 30b + 24c = 14

subtracting the 3rd eqn (eliminating b) ___ 6c = 2