5 + x/8 = 14/16
x/8 = 14/16 - 5
x/8 = -33/8
=> x = -33
\(pt\Leftrightarrow\frac{10+2x}{16}=\frac{14}{16}\Leftrightarrow10+2x=14\Leftrightarrow2x=14-10=4\)
\(\Leftrightarrow x=2\)
\(5+x:8=14:16\)
\(\Leftrightarrow5+x:8=\frac{7}{8}\)
\(\Leftrightarrow x:8=\frac{7}{8}-5=\frac{-33}{8}\)
\(\Leftrightarrow x=-\frac{33}{8}\cdot8=-33\)
5 + x/8 = 14/16
=> 5 + x/8 = 7/8
<=> x/8 = 7/8 - 5
=> x/8 = -33/8
<=> x = -33/8 x 8
=> x = -33