Question

resolva as seguintes equações:
a)3x=15
b)2x=14
c)4x=-12
d)7x=-21
e)13x=13
f)9x=-9
g)25x=0
h)35x=-105

Answer 1

3x= 15 ( 5.3 = 15)
x= 15/3
x= 5


B) 2x= 14 ( 7.2 = 14)
x= 14/2
x= 7


c) 4x= -12
x= -12/4 ( -3 . 4 = -12)
x= -3


d)7x=-21
x= -21/7 ( 7 . -3= 21)
x= -3

e)13x= 13
x= 13/13 ( 13 . 1 = 13)
x= 1


f)9x= -9 ( 9. -1= -9)
x=-9/9
x= -1


g) 25x= 0 ( 25 . 0 = 0)
x= 0/25
x= 0


h)35x= -105
x= -105/35 ( 35 . -3= -105)
x= -3