SOLUTION: 65=((71*80.4)+(10*31.6)+(x*21))/(71+10+x) solve for x

Algebra ->  Divisibility and Prime Numbers -> SOLUTION: 65=((71*80.4)+(10*31.6)+(x*21))/(71+10+x) solve for x      Log On


   

Question 215764: 65=((71*80.4)+(10*31.6)+(x*21))/(71+10+x)
solve for x
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
65=((71*80.4)+(10*31.6)+(x*21))/(71+10+x)
65=(5,708.4+316+21x)/(81+x)
65=(6,024.4+21x)/(81+x)
65(81+x)=6,024.4+21x
5,265+65x=6,024.4+21x
65x-21x=6,024.4-5,265
44x=759.4
x=759.4/44
x=17.25909 ans.