SOLUTION: solve by elimination method 6x-y=3 x+2y=7

Algebra ->  Expressions-with-variables -> SOLUTION: solve by elimination method 6x-y=3 x+2y=7      Log On


   

Question 373881: solve by elimination method
6x-y=3
x+2y=7
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
Multiply the top eqn by 2, with the purpose of eliminating y: 12x - 2y = 6. Add corresponding sides with the bottom equation, to get 13x = 13, or x = 1. Now, 6*1 - y = 3, or -y = 3-6 = -3, or y = 3.