Question

x/2-1/5=2 x=?

Answer 1

In fraction subtraction or addition, you need a common denominator. In this case, it has to be 5*2, or simply 10.
\[\frac{ x }{ 2 }-\frac{ 1 }{ 5 }=2\]
\[\frac{ 5x-2 }{ 2(5) }=2\]
\[5x-2=2(10)\]
now solve for x
\[5x=22\]
\[x =\frac{ 22 }{ 5 }\]
There's no way to simplify that, so that's your answer.