Answer :

luana
[tex]\frac{7}{b+5}=\frac{10}{5}\\\\10(b+5)=\frac{}{}7\cdot5\\\\10b+50=35\\\\10b=35-50\\\\10b=-15\ \ \ \ |:10\\\\b=-\frac{15}{10}=-\frac{3}{2}=-1\frac{1}{2}[/tex]

Other Questions