Hint to puzzle 156: Three simultaneous equations
Find a linear combination of the three equations that yields:.
x(x − 1)(1 + x + xz) = y(y − 1)(1 + z + yz).
Find a linear combination of the three equations that yields:.
x(x − 1)(1 + x + xz) = y(y − 1)(1 + z + yz).