Question 180668
-7n+5 = 8n -10
-7n+7n +5 = 8n +7n -10
0+5 = 15n -10
5= 15n -10
5+10 = 15n - 10 + 10
15 = 15n 
15/15= 15n/15
1 = 1n
or 
n =1