Question

Resolva as seguintes equações:
A) 3x = 15
B) 2x = 14
C) 25x = 0
D) 4x = 1
E) 21x = 3x
F) 84 = 6x​

Answer 1

3x= 15

x=15/3= 5

2x= 14

x= 14/2= 7

25x= 0

x= 0/25= 0

4x= 1

x= 1/4 ou 0,25

21x= 3x

21x-3x=0, 18x=0, x= 0/18= 0

6x= 84

x= 84/6= 14

Answer 2

A)

3x=15

x=15/3

x=5

B)

2x=14

x=7

C)

25x=0

x=0/25

x=0

D)

4x=1

x=1/4

x=0,25

E)

21x=3x

21x-3x=0

18x=0

x=0/18

x=0

F)

84=6x

84/6=x

14=x