Question

GRUPO 4


Resolva as equações:

a) 7x – 1 = 13

b) 6x = 2x + 28

c) 5x – 3 = -13

d) 8y – 12 = 5

e) 20x – 9 = -11x

f) 5x = 27 – 4x

g) 2x – 6 = 10

Answer 1

Resposta:

Explicação passo a passo:

Resolva as equações:

a) 7x – 1 = 13

'7x= 14'

'x = 14/7'

"x = 2"

b) 6x = 2x + 28

'6x-2x= 28'

'4x= 28'

' x =28/4'

"x = 7"

c) 5x – 3 = -13

'5x= -13+3"

'5x = - 10'

'x = - 10/5'

' x = -2'

d) 8y – 12 = 5

'8y= 12+5'

'y=17/8'

e) 20x – 9 = -11x

'20x+11x= 9'

'31x=9'

x = "31/9"

f) ''5x = 27– 4x'

'5x+4x= 27'

'9x= 27'

'x=27/9'

'x = 3'

g) 2x – 6 = 10

'2x= 10+6'

'2x= 16

'x= 16/2'

'x = 8'