Question 120683
Substitute y from the second equation into the first equation:

10x+2y=7
y=-5x+3


10x +2(-5x+3) = 7
10x -10x + 6=7
6=7


This statement is NEVER true, so there is NO SOLUTION.  This means that the lines represented by these equations are parallel.  The system is said to be "inconsistent".  


R^2