Question

resolva as equaresolvações: A) x + 12 = 30 B) X + 2X = 55 C)2X - X = 21 D) X + 2X - X = 10 ​

Answer 1

Olá!

a)

x + 12 = 30

x = 30 - 12

x = 18

b)

x + 2x = 55

3x = 55

x = 55/3

c)

2x - x = 21

x = 21

d)

x + 2x - x = 10

2x = 10

x = 10/2

x = 5

:)

Answer 2

Oie, Td Bom?!

A)

x + 12 = 30

x = 30 - 12

x = 18

B)

x + 2x = 55

3x = 55

x = 55/3

C)

2x - x = 21

x = 21

D)

x + 2x - x = 10

3x - x = 10

2x = 10

x = 10/2

x = 5

Att. Makaveli1996