Answer:

Step-by-step explanation:
apply the rule (a) = a 

apply the exponent rule


add the numbers

which would make the answer

Based on the equation, B = 8.
18 because 6=22. 12=44. 18=66
Check the picture below.
pretty sure you know how much that is.
Follow PEMDAS - but backwards.
(Parenthesis, Exponents. Multiplication, Division, Addition, Subtraction)
First SUBTRACT 5 from each side of the equation...
3x/5 + 5 (- 5) = 20 (- 5)
3x/5 = 15
Next MULTIPLY each side by 5...
3x/5 ( • 5) = 15 (• 5)
3x = 75
The third step if you need is to DIVIDE ...
3x ( / 3) = 75 (/ 3)
x = 25