Question

qual o valor da raiz para a equação a) -4=2x
b)20=5x
c) 2=2x
d)12=4x
e)-8=2×
f)2x+2=0
g)2x-6=0
h)3x-12=0​

Answer 1

-2, 4, 1, 3, -4, -1, 3 e 4

Explicação passo-a-passo:

a) 2x=-4

x= -4/2

x= -2

b) -5x= -20 ( -1)

5x=20

x= 20/5

x= 4

c) -2x = -2 ( -1)

2x= 2

x=

2/2

x= 1

d) -4x = -12 ( -1)

4x=22

x=12/4

x=3

e) -2x= 8 ( -1)

2x= -8

x= -8/2

x= -4

f) 2x= -2

x= -2/2

x= -1

g) 2x= 6

x= 6/2

x=3

h) 3x= 12

x= 12/3

x=4