Question

What is the solution to the system of equations ? 2x-y=7 y=2x+3

Answer 1

y = 2x + 3

2x - y = 7 

Substituting the  value of y,

2x - (2x + 3) = 7

2x - 2x - 3 = 7

-3 ≠ 7

Hence, there is no solution to this equation. This equation does not even exist.