SOLUTION: Use elimination to solve each system of equations. 13a+5b=-11 13a+11b=7

Algebra ->  Graphs -> SOLUTION: Use elimination to solve each system of equations. 13a+5b=-11 13a+11b=7      Log On


   

Question 81077This question is from textbook Algebra I
: Use elimination to solve each system of equations.

13a+5b=-11
13a+11b=7 This question is from textbook Algebra I

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
13a+5b=-11
13a+11b=7
---------
Subtract the 1st equation from the 2nd to get:
6b=18
b=3
---------
Substitute that into 13a+5b=11 to solve for a:
13a+5*3=-11
13a = -26
a=2
-----------
solution: a=2 and b=3
=============
Cheers,
Stan H.