fix issue in "elimination_technique_1"
fix issue in "elimination_technique_1"

sampadsaha5/sympy,kaushik94/sympy,jaimahajan1997/sympy,skidzo/sympy,postvakje/sympy,chaffra/sympy,jaimahajan1997/sympy,skidzo/sympy,kaushik94/sympy,madan96/sympy,aktech/sympy,sampadsaha5/sympy,postvakje/sympy,madan96/sympy,yashsharan/sympy,skidzo/sympy,souravsingh/sympy,kaushik94/sympy,aktech/sympy,rahuldan/sympy,jaimahajan1997/sympy,yashsharan/sympy,aktech/sympy,souravsingh/sympy,rahuldan/sympy,drufat/sympy,rahuldan/sympy,drufat/sympy,madan96/sympy,drufat/sympy,souravsingh/sympy,chaffra/sympy,chaffra/sympy,sampadsaha5/sympy,postvakje/sympy,yashsharan/sympy