Answer:
Step-by-step explanation:
Don't know ur answer make q clear
Answer:
yes
Step-by-step explanation:
Answer:
The step 4 is not what he should have done. But the wrong is step 5, because if he added -2x both sides, it would give the following equation:

and not 
Note that in step 4 he should have added 2x and not -2x to both sides, but we still have the equality. The problem is that step 5 is totally wrong.
I don't know what answer is expected to this question, but I would mark step 5, because this is mathematically wrong.
Solving the equation

Using distribution

Add
both sides


Add 12 both sides

Divide both sides by 5

Answer:
C. 
C. 
Step-by-step explanation:
A unit fraction is a fraction that has 1 as it's numerator and a positive number as it's denominator.