Question

If 3 n - 21 = 57 then n = ? 
(a)26
(b)27
(c)28
(d)29
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Answer 1

Step-by-step explanation:

3n -21 = 57

=) 3n = 57 +21 = 78

=) n = 78/3 = 26

Answer 2

Answer:

(a) 26

Step-by-step explanation:

= 3n - 21 = 57

= 3n = 57 + 21

= 3n = 78

= n = 78 / 3

= n = 26