math algebra
posted by jorge .
Solve the following system using elimination. If a single solution exists, write the solution as an ordered pair. Your answer will be an ordered pair, no solution, or infinitely many solutions.
a+b=4
2a3b=2

Multiply first equation by 2, then add the equations.
2a+2b=8
2a3b=2
b = 10
Solve for b then a.