Question

resolva as seguintes equações

a) 2x=14
b) 4x= -12
c) 7x= -21
d) 13x=13
e) 21=3x
f) 84=6×​

Answer 1

Resposta:

a) x = 7; b) x = -3; c) x = -3; d) x = 1; e) x = 7; f) x = 14

Explicação passo-a-passo:

a)

2x = 14

x = 14/2

x = 7

b)

4x = -12

x = -12/4

x = -3

c)

7x = -21

x = -21/7

x = -3

d)

13x = 13

x = 13/13

x = 1

e)

21 = 3x

21/3 = x

7 = x

f)

84 = 6x

84/6 = x

14 = x

Answer 2

A)2x=14

X=14/2

X=7

b) 4x= -12

X=-12/4

X=-3

c) 7x= -21

X=-21/7

X=-3

d) 13x=13

X=13/13

X=1

e) 21=3x

X=21/3

X=7

f) 84=6×​

X=14