Question

Exercícios : Descubra o valor de x
1- Resolva as equações do 1° grau:
a) x – 9 = 21
b) x + 11 = 30
c) 5x – 5 = 40
d) 3x + 4 = 28
e) 4x – 2 = - 18

Answer 1

Resposta:

A) X=21+9

X=30

B)X=30-11

X=19

C)5x=40+5

5x=45

X=45/5

X=9

D)3x=28-4

3x=24

X=24/3

X=8

E)4x=+2-18

4x=-16

X=-4

Answer 2

Oie, Td Bom?!

a)

x - 9 = 21

x = 21 + 9

x = 30

b)

x + 11 = 30

x = 30 - 11

x = 19

c)

5x - 5 = 40

5x = 40 + 5

5x = 45

x = 45/5

x = 9

d)

3x + 4 = 28

3x = 28 - 4

3x = 24

x = 24/3

x = 8

e)

4x - 2 = - 18

4x = - 18 + 2

4x = - 16

x = - 16/4

x = - 4

Att. Makaveli1996