Answer :
First we have to multiply factor by every argument from the parenthesis.
-10n+3(8+8n)=-6(n-4)
-10n+3*8+3*8n=-6n+6*4
-10n+24+24n=-6n+24
24+14n=-6n+24 /-24
14n=-6n /+6n
20n=0 /:20
n=0 - its the answer
-10n+3(8+8n)=-6(n-4)
-10n+3*8+3*8n=-6n+6*4
-10n+24+24n=-6n+24
24+14n=-6n+24 /-24
14n=-6n /+6n
20n=0 /:20
n=0 - its the answer