<p>The present research examines the impact of mixing nanoparticles and magnetic forces on the mixed convection boundary layer flow and heat transfer in mixed nanofluids caused by an angled shrinking-stretching surface. Silver (Ag) is added to a MgO-water nanofluid to form an Ag-MgO-water mixed nanofluid. By applying the proper similarity transformations, the governing equations are transformed into ordinary differential equations. The issue is quantitatively solved using the MATLAB function bvp4c. We present and explain the impact of the chosen parameters on the rate of heat transfer, temperature, velocity, and skin friction coefficient. For the cases of stretching and shrinking, different (dual) nonunique solutions are identified. Results of this investigation indicate that the temperature of hybrid nanofluid increased through the increasing amounts of magnetic parameter and nanoparticle volume friction for shrinking-stretching surface. When increasing the Casson parameter, the temperature profile increasing for stretching surface and decreasing for shrinking surface. The velocity of hybrid nanofluid decreased through the increasing amounts of Prandtl number, suction parameter, and angle for shrinking-stretching surface.</p>