Whats the answer and how do you work it out?
5/12-1/4

2/12 or 1/6

Step-by-step explanation:

to subtract or to add you need to see if the two fraction have common denominator. In this case there is no common denominator.

since 5/12 as a denominator of 12

and 1/4 has  4 as denominator which is multiple of 12

THE COMMON DENOMINATOR IS 12

to get from 4 to 12 you multiply 4 by 3

4 times 3 = 12

if you do one thing on the denominator, then you should also do it to the numerator.

1/4 times 3/3= 3/12

now you could subtract 5/12 and 3/12

5/12-3/12= 2/12 or 1/6

-19x-34=56-x
Add x to both sides so that the variable x is only on one side
-18x-34=56
Add 34 to both sides 
-18x=90
Divide both sides by -18 so that the only thing remining on the left side is the variable x
Final x= -5