Answer: x = 21
Step-by-step explanation:
look at the picture
 
        
             
        
        
        
Answer:
- 28
Step-by-step explanation:
Plug in 7 for x
5 + 7 - 5 x 8
5 + 7 - 40
12 - 40
-28
 
        
             
        
        
        
Answer:
No. 
Step-by-step explanation:
When you plug in -6 for x, and 6 for y, like this 5 (-6) + 12 (6) = -15, it does not equal -15, but 42. 
 
        
             
        
        
        
The equivalent expression of  is
 is 
<h3>How to determine the equivalent expression?</h3>
The logarithmic expression is given as:

The law of logarithm states that:
log(a) - log(b) = log(a/b)
This means that the expression can be split as:

Hence, the equivalent expression of  is
 is 
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