Can someone explain this to me with a answer and work that is shown?

Step-by-step explanation:

To operate between mixed numbers is always better to write then in fraction form first (as improper fractions), and then operate using the rules to combine fractions.

For the first mixed number :

For the second mixed number:

So now we have to subtract these two fractions, so we need to write them with the same common denominator (6 x 5 = 30):

and finally we write the obtained answer in mixed number form:

this linear equation would have just one solution.

step-by-step explanation:

the reason why this would have one solution is that it is an expression with just one variable. since that variable is not raised to a power, it will always have just one solution.