In soliton theory, nonlinear mathematical models and their solutions have great importance due to their geometrical behavior. The major focus of this article is to discover solutions of the traveling wave for the equation of foam drainage and NLEEs of 4 th order. The (G'/G)-expansion approach is used on these nonlinear differential equations. With the proper utilization of complex transform these nonlinear PDEs are converted into an ODE. It is noticed that (G'/G)-expansion technique is a sophisticated and accessible tool in engineering, optics, and mathematical physics to find solutions for NLEEs. The method proposed is very efficient and responsible.
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