Eliminate::mode
SolveAlways::mode
MainSolve::mode
AlgebraicRules::mode
Automatic is not a valid value for the Mode option:
Eliminate[x ^ 2 + y ^ 2 == 1 && 2x + 3y == 5 && x ^ 3 - x y == 7, y, Mode -> Automatic]Eliminate[x ^ 2 + y ^ 2 == 1 && 2x + 3y == 5 && x ^ 3 - x y == 7, y, Mode -> Modular]