Question

resolva as equaçoes me ajudemmmmmm

a)2x + 4 = 6x -7.


b)7x + 4 = 5x + 6.


c)3.(2x +1) = 5(x + 8).


d)4.(2x - 3) = 2.(3x + 6 )

Answer 1

Explicação passo-a-passo:

a)

2x + 4 = 6x - 7

2x - 6x = -7 - 4

-4x = -11 .(-1)

4x = 11

x = 11/4

x = 2,75

b)

7x + 4 = 5x + 6

7x - 5x = 6 - 4

2x = 2

x = 2/2

x = 1

c)

3.(2x + 1) = 5.(x + 8)

6x + 3 = 5x + 40

6x - 5x = 40 - 3

x = 37

d)

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

8x - 12 = 6x + 12

8x - 6x = 12 + 12

2x = 24

x = 24/2

x = 12

Answer 2

Oie, Td Bom?!

a)

2x + 4 = 6x - 7

2x - 6x = - 7 - 4

- 4x = - 11 . (- 1)

4x = 11

x = 11/4

b)

7x + 4 = 5x + 6

7x - 5x = 6 - 4

2x = 2

x = 2/2

x = 1

c)

3(2x + 1) = 5(x + 8)

6x + 3 = 5x + 40

6x - 5x = 40 - 3

x = 37

d)

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

8x - 12 = 6x + 12

8x - 6x = 12 + 12

2x = 24

x = 24/2

x = 12

Att. Makaveli1996