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-2m-8+2= 0
-2m -6 = 0
-2m=6
m=-3
c)
-x+5/ -2 = -10
-x+5= 20
-x= 20 -5
-x = 15
-15 = x
d) (x+7) / (-12 ) = -14
x+7 / -12 = -14
x + 7 = 168
x = 168 - 7
x = 161
e) -5(2x - 1 ) = -205
2x - 1 = 41
2x = 41 +1
2x = 42
x= 42 / 2
x = 21
ojala te sirva ???