Question 19676
There are two possible ways to get rid of the fraction.  One is to turn it into a decimal, but this only works some of the time.  For a fraction like {{{1/4}}} this will work.  A fraction is just another way to express division.  The numerator (on top) divided by the denominator (on bottom) will give you the decimal form of the fraction. (ie. 1 divided by 4 equals .25)
Warning! This will not work for many fractions, such as {{{1/3}}}

The other way is to multiply everything in the equation by the denominator of the fraction.  In the problem you list:
{{{(1/4)x+5=28}}} you'll multiply every term in the equation by 4:
{{{(4)(1/4)x+(4)5=(4)28}}} which gives you {{{1x+20=112}}}

The denominator is cancelled out because multiplication is the inverse of division (ie. 4 times 1 divided by 4 equals 1)

This way will work no matter what the fraction is.

I hope this helps!