m^2(x-n)=n^2(x-m)(
m^2x-m²n=n^2x-n²m
m²x-n²x=m²n-n²m
(m²-n²)x=m²n-n²m
x=(m²n-n²m)/(m²-n²)
x=[mn(m-n)]/[(m+n)(m-n)]
x=mn/(m+n)
m^2(x-n)=n^2(x-m)(
m^2x-m²n=n^2x-n²m
m²x-n²x=m²n-n²m
(m²-n²)x=m²n-n²m
x=(m²n-n²m)/(m²-n²)
x=[mn(m-n)]/[(m+n)(m-n)]
x=mn/(m+n)