Answer:
54
Step-by-step explanation:
b.
i. N= 10n+120
= 10*14+120
= 260
ii. N = 10n+120
<=> 190=10n+120
<=> n=7
Yes
Divide -2x + 6 by -2, then bring the -2 outside the bracket
3
I think it'll be 5 + n = 11
11 - 5 = 6
n = 6