Question

equação do 1 grau incógnita

a)2x=4

b)4x=12+8

c)16=2x+2x​

Answer 1

(A)

2x = 4

x = 4 / 2

x = 2

(B)

4x = 12 + 8

4x = 20

x = 20 / 4

x = 5

(C)

16 = 2x + 2x

16 = 4x

x = 16 / 4

x = 4  

Answer 2

a)2x=4

x=4/2

x=2

b)4x=12+8

4x=20

x=20/4

x=5

c)16=2x+2x

-2x-2x=-16

-4x=-16 •(-1)

4x=16

x=16/4

x=4