Question

resolver 

a)x+6=27

b)2x-6=24

c)x=-12
   7

Answer 1

a)x+6=27
x=27-6
x=21

b)2x-6=24
2x=24+6
x=30/2
x=15

c)x=-12
   7

x=7.(-12)
x=-84