Solve the following system of linear equations. Enter your solution like `x=-7, y=8`. If there are infinitely many solutions, enter `redundant`. If there is no solution, enter `no solution`.
- x=1, y=4
- x=1,y=4
- x = 1, y = 4
- (x,y)=(1,4)
- (x,y) = (1,4)
- (x, y) = (1, 4)
- (1,4)
- (1, 4)
- 1,4
- 1, 4