Kakk mohon bantuanya soalnya sekarang di kumpulin.

Jawab:

Penjelasan dengan langkah-langkah:

a.

2x + 4 = 6

2x = 6 – 4

2x = 2

x = 1

b.

3x – 2 = 7

3x = 7 + 2

3x = 9

x = 3

c.

1/2 x + 2 = 4

1/2 x = 4 – 2

1/2 x = 2

x = 2 : 1/2

x = 4

d.

1/3 x – 2 = 1

1/3 x = 1 + 2

1/3 x = 3

x = 3 : 1/3

x = 9

e.

3x – 2 = x + 2

3x – x = 2 + 2

2x = 4

x = 2

f.

1/3 x + 1 = 2x – 4

x + 3 = 6x – 12 ———-> dikalikan 3

x – 6x = -12 – 3

-5x = =15

x = -15/-3

x = 5

g.

2x – 3 / 3 = 3x – 2/6

2 ( 2x – 3 ) = ( 3x – 2 ) ———–> dikalikan 6

4x – 6 = 3x – 2

4x – 3x = -2 + 6

x = 4

h.

1/( x – 2 ) + 1/( 2x – 4 ) = 5/6

1/ ( x – 2 ) + 1 / 2 ( x – 2 ) = 5/6

2/2( x – 2) + 1/2( x – 2 ) = 5/6

3/ 2(x – 2 ) = 5/6

5 ( 2 ( x – 2 ) ) = 3 ( 6 )

10 ( x – 2 ) = 18

10x – 20 = 18

10x = 18 + 20

10x = 38

x = 3,8

i.

(4x – 1)/(x – 2 ) – 1 = 4x – 2

( 4x – 1 ) /( x – 2 ) = 4x – 2 + 1

( 4x – 1 )/ ( x – 2 ) = 4x – 1

4x – 1 = ( x – 2 ) ( 4x – 1 )

( 4x – 1 ) / ( 4x – 1 ) = ( x – 2 )

1 = x – 2

x = 1 + 2

x = 3

j.

( x + 4 )/( x + 3 ) – 1 = 1/5

( x + 4 ) / ( x + 3 ) = 1 + 1/5

( x + 4 ) / ( x + 3 ) = 6/5

5 ( x + 4 ) = 6 ( x + 3 )

5x + 20 = 6x + 18

5x – 6x = 18 – 20

-x = – 2

x = 2

k.

( 2x + 5 ) / ( x + 2 ) – 2 = 1/4

( 2x + 5 ) / ( x + 2 ) = 2 + 1/4

( 2x + 5 ) / ( x + 2 ) = 9/4

4 ( 2x + 5 ) = 9 ( x + 2 )

8x + 20 = 9x + 18

8x – 9x = 18 – 20

-x = -2

x = 2

semoga bisa membantu

Jawaban:

a.2x+4=6

2x=6-4

x=2-2

x=O