Solve this system of equations algebraically:
y + x = 19 - x2
x + y = 80
1. Isolate one variable in the system of equations. y = - x2 - x + 19
y = - x + 80
2. Use substitution to create a one-variable equation. - x + 80 = - x2 - x + 19
3. Solve to determine the unknown variable in the equation.
The system has
real number solution (s).
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