Answer:
n = 2/5
Step-by-step explanation:
Firstly simplify the bracket;
-2(1 - 7n) = -2 + 7n
then go back to the question and find the value of n
; 5n + 3 = -2 + 7n
; 3 + 2 = 7n - 5n
; 5 = 2n....then divide both sides by 2
; n = 2/5
