Question

A) 2(x + 3) = 30

B) 8 - 2(x + 5) = 5

C) 3(y - 1) - 4(y -2) = 6

D) 2(5y + 1) 27

E) 2y - 3(y - 1) = 8 - 2(y - 2)

F) 6x - 5(1 - x) = 10x + 6

G) 3(2x + 4) = 4(x + 6)

Answer 1

Resposta:

Simples:

A) 2.X.3 = 30

2X + 6 = 30

2X = 30 - 6

2X = 24

X = 24/2 --> X = 12

B) 8 - 2.(x + 5) = 5

8 - 2x - 10 = 5

-2x = 5 - 8 + 10

-2x = 7

x = 7/-2

C) 3Y - 3 - 4Y - 8 = 6

3Y + 4Y = -3 +8 - 6

7Y = -1

-Y = -7 (.1)

Y = 7

D) 10Y + 1 = 27

10Y = 27 - 1

10Y = 26

Y = 26/10

E) 2y -3 (y-1) =8-2 (y-2)

2y -3y +3 = 8 -2y +4

-y +3 = 12-2y

-y +2y = 12 -3

y =9  

F) 6x-5(1-x) = 10x+6

6x-5+5x = 10x+6

6x+5x-10x=6+5

1x=11

x=11

g) 3.(2x + 4) = 4.(x + 6)

6x + 12 = 4x + 24

6x - 4x = 24 - 12

2x = 12

x = 12/2

x = 6

ESPERO TER AJUDADO!

Explicação passo-a-passo:

Answer 2

A) 2x +6 = 30

   2x = 30 -6

   x = +24 : 2

   x = 12

B) 8 -2x -10 = 5

  -2x = 5 +10 -8

   -2x = +7. (-1)

   2x = -7

     x = -7 : 2

     x = -7/2

C)

3y -3 -4y +8 = 6

3y -4y = 6 -8 +3

-1y = +1 . (-1)

+1y = -1

 y = +1 : -1

 y = 1