Answer:
n=-1
Step-by-step explanation:
5n-14(10+8n)=-19+14n
-107n-140=-19+14n
+140 +140
-107n=14n+121
-14 -14
-121n=121
/-121 /-121
n=-1
[tex]5n - 14(10 + 8n) = - 19 + 14n[/tex]
[tex]5n - 140 - 112n = - 19 + 14n[/tex]
[tex] - 140 - 107n = - 19 + 14n[/tex]
[tex] - 140 + 19 = 14n + 107n[/tex]
[tex] - 121 = 121n[/tex]
[tex] - \frac{ 121}{121} = n[/tex]
[tex] - 1 = n[/tex]
