
<< Equate all the denominators with a ^minimum^ common number(12).

<< Classify same terms to one side. The fraction that you threw to other side in the equation changes.


13x=13
x=13/13
x=1
So the main equation's solution set is 1.
Let's look at the options then!
1:
**equate denominators
=

=

=

x=
2: 

**throw -5x left of the equation.

x=
3: 

3x=7
x=7/3
4: 
8x-13= -5x
13x=13
x=1
The correct answer is 4.
Hope it helps!
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