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n= -10
b) 7n-2n = 5+40
9n = 45
n = 45/9
n= 5
c) 10-6-7=11n
-3=11n
11/-3=n
d) 3m-4m=38+11
-m= 49
m=-49
a) n=-10
b) n= 5
c) n= 3/11
d) m= -49
Desarrollo
a) 2n-n=1-11
1n=-10
n= -10/1
n= -10
b) 7n+2n=5+40
9n=45
n= 45/9
n= 5
c) 11n=7-10+6
11n=3
n= 3/11
n=3/11
d) 3m-4m=38+11
-1m=49
m=49/-1
m=-49