Question

Resolva as equações do 1º grau:

a) x – 13 = 21 b) x + 13 = 21 c) x + 8 = - 25 d) x - 17 = -20 e) x + 9 = - 11​

Answer 1

Resposta:

a) x – 13 = 21

x = 21 + 13

x = 34

b) x + 13 = 21

x = 21 - 13

x = 8

c) x + 8 = - 25

x = -25 - 8

x = -33

d) x - 17 = -20

x = -20 + 17

x = -3

e) x + 9 = - 11​

x = -11 - 9

x = -20

Answer 2

Oie, Td Bom?!

a)

x - 13 = 21

x = 21 + 13

x = 34

b)

x + 13 = 21

x = 21 - 13

x = 8

c)

x + 8 = - 25

x = - 25 - 8

x = - 33

d)

x - 17 = - 20

x = - 20 + 17

x = - 3

e)

x + 9 = - 11

x = - 11 - 9

x = - 20

Att. Makaveli1996