Question 979312

If {{{40-16=2(1/2)}}},then {{{75-30=2(1/2)}}}: means {{{40/75=16/30}}}=>{{{40*30=16*75}}}=>{{{1200=1200}}}

then {{{75-30=2(1/2)}}} and {{{100-x=2(1/2)}}}, must be

{{{75/100=30/x}}}

{{{75x=3000}}}

{{{x=40}}}

so, you have {{{40-16=2(1/2)=75-30=2(1/2)=100-40=2(1/2)}}}