SOLUTION: a= 2b-4 2b+a=2

Algebra ->  Expressions-with-variables -> SOLUTION: a= 2b-4 2b+a=2      Log On


   

Question 379971: a= 2b-4
2b+a=2
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
Substitute the top equation into the bottom equation: 2b + 2b - 4 = 2, or 4b = 6. Then b = 6/4, or b = 3/2. Also, a = 2*(3/2) - 4 = 3 - 4 = -1.