Question 171949
basically they want you to cross multiply....this is like a direct proportion problem....and your solving for one of the unknowns....lets call our unknown(?)...z
:
{{{-7yt/3x=z/18xyt}}}
:
to solve for z just cross multiply the -7yt term with the 18xyt term
:
{{{(-7yt)(6cross(18)cross(x)yt)/cross(3)cross(x)=z}}}
:
{{{highlight(z=-42y^2t^2)}}}