Two waves are described by y1 = A1 sin(k1x - ω1t) and y2 = A2 sin(k2x - ω2t), where A1 and A2 are the amplitudes of the waves in meters, k1 and k2 are the wave numbers in inverse meters, and ω1 and ω2 are the angular frequencies in radians per second. When these two waves are combined, what is the resulting traveling wave equation?