SOLUTION: use the method of elimination to solve the system of linear equations. 3a = 7 - b 3a = 5 - b choose one: A. there is one solution , the solution is ___. B. there are i

Algebra ->  Linear-equations -> SOLUTION: use the method of elimination to solve the system of linear equations. 3a = 7 - b 3a = 5 - b choose one: A. there is one solution , the solution is ___. B. there are i      Log On


   



Question 662600: use the method of elimination to solve the system of linear equations.
3a = 7 - b
3a = 5 - b
choose one:

A. there is one solution , the solution is ___.
B. there are infinitely many solutions.
C. there are no solutions.
Thanks!

Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

3a+=+7+-+b........1
3a+=+5+-+b........2
____________________subtract 2 from 1

3a-3a+=+7+-+b-5-%28-b%29
0=+7+-+b-5%2Bb
0=+7+-5
0=+2...........C. there are no solutions