Question

a)- ( - x + 1 ) = - 2x + 2 ( x - 5 )
b)- 5 ( x - 2 ) + 3 ( x - 7 ) = 0
c)- 4x - ( - x + 1 ) = 2 + ( x - 3 )
d) -1 - 3x - 7x + 4 - 2 = 0
e)- 20x - ( - x + 5 ) = - 3x + 5

me ajudem por favor​

Answer 1

Resposta:

a) +x -1 = -2x +2x -10 (corta o -2x com o 2x)

x = -11

b) -5x + 10 +3x -21 = 0

-2x = 11

2x= -11

x= 11/2

c)-4x + X -1 = 2 + x - 3

-4x = -2

x= 2/4

x= 1/2

d) -1 -3x -7x +4 -2 = 0

1 -10 x =0

-10 x = -1

x = 1/10

e) -20 x + x - 5 = -3x +5

-16 x = 10

x= 10/-16

x= 5/-8

Explicação passo a passo:

Answer 2

Resposta:

a) x = -9

B) x = - 11

2

c) x = 0

d) x = 1

10

e) x = - 5

8

Explicação passo-a-passo:

a)- (-x + 1) = -2x + 2 (x - 5)

x-1= -2x + 2x - 10

x -1 = - 10

x = -10 + 1 {x = -9}

b)-5 (x -2) +3(x -7) = 0

-5x +10 +3 -21 = 0

-2x -11 =0

-2x =11 {x = _ 11 }

2

c) -4x - (-x +1) = 2 + (x -3)

-4x + x - 1 = 2 + x - 3

-4x -1 = 2 -3

-4x -1 = -1

-4x = 0 {x = 0}

d) -1 -3x -7x +4 -2 =0

1 -10x =0

- 10x = 1 {x = 1 }

10

e) -20x -( -x + 5) = -3x + 5

-20x + x - 5 = -3x + 5

-19x -5 = -3x +5

-19x +3x = 5 +5

-16x = 10 { x - 5 }

8

ESPERO TER AJUDADO♡♡