Question

Resolva as equações do primeiro grau abaixo:

Answer 1

Resposta:

a) 2x-48=0

2x=48

x= 48:2

x= 24

b) x + 12 = 0

x=-12

c) -24x + 48 = 0

-24x = -48

24x = 48

x= 48:24

x= 2

d) 3z - 2 = 0

3z = 2

z= 2

3

e) 2c + 28= 0

2c = -28

c = -28:2

c= -12

Answer 2

a) 2x-48=0

2x=48

x= 48/2

x= 24

b) x + 12 = 0

x=-12

c) -24x + 48 = 0

-24x = -48  (-1)

24x = 48

x= 48/24

x= 2

d) 3z - 2 = 0

3z = 2

z= 2/3

e) 2c + 28= 0

2c = -28

c = -28/2

c= -12