Question 20809
1.4f+1.1=8.3-f <--add f to both sides
(1.4f+1.1)+f=(8.3-f)+f
2.4f+1.1=8.3     <--subtract 1.1 from both sides
(2.4f+1.1)=8.3-1.1
2.4f=7.2      <--divide both sides by 2.4
{{{2.4f/2.4}}}={{{7.2/2.4}}}
f=3