Solve the system of equations x - 2y = 3 and 7x + 6y = -45 by combining the equation

Find parametric equations for the line tangent to the curve of intersection of the surfaces at the given point. surfaces: xsquared2plus+2yplus+2zequals=1212 yequals=33 point: left parenthesis 1 comma 3 comma five halves right parenthesis

Solve 2x+y=3 x+y=5 in substitution method

How can constraints be used to model a real-world situation?