Question

bisa jawab smua dpt poin bnyk​

Answer 1

Penjelasan dengan langkah-langkah:

a.)

2a + 3=a -2

2a-a=-2-3

a=-5

b.)

2/3x + 7=9

kedua ruas kali 3

2x + 21=27

2x=27-21

2x=6

x=3

c.)

2(5-2z)=3(5-z)

10-4z=15-3z

10-15=-3z+4z

-5=z

d.)

-2z + 5=-(z+9)

-2z +5=-z-9

-2z+z=-9-5

-z=-14

z=14

e.)

3(3x + 2)=5x-2(x+3)

9x+6=5x-2x-6

9x+6=3x-6

9x-3x=-6-6

6x=-12

x= -2

f.)

5x -7=9-(2x-5)

5x-7=9-2x+5

5x-7= -2x+14

5x+2x=14+7

7x=21

x=3

g.)

2/3x + 5=1/2x + 6

semua ruas dikali 6 ,kenapa 6?karena kpk 3 dan 2 adalah 6

4x+30=3x+36

4x-3x=36-30

x=6

h.)

x-2/3=x+3/4

kali silang aja

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

4x-8=3x+9

4x-3x=9+8

x=17

Jadikan jawaban terbaik yaa

Answer 2

Penjelasan dengan langkah-langkah:

a)

2a + 3 = a - 2

2a - a = -2 - 3

a = -5

b)

⅔x + 7 = 9

⅔x = 9 - 7

⅔x = 2

x = 2 × 3/2

x = 3

c)

2(5 - 2z) = 3(5 - z)

10 - 4z = 15 - 2z

-2z - (-4z) = 10 - 15

2z = -5

z = -5/2 atau -2½

d)

-2z + 5 = -(z + 9)

-2z + 5 = -z - 9

-2z - (-z) = -9 - 5

-z = -14

z = 14

e)

3(3x + 2) = 5x - 2(x + 3)

9x + 6 = 5x - 2x - 6

9x + 6 = 3x - 6

9x - 3x = -6 - 6

6x = -12

x = -2

f)

5x - 7 = 9 - (2x - 5)

5x - 7 = 9 - 2x + 5

5x - 7 = 14 - 2x

5x + 2x = 14 + 7

7x = 21

x = 3

g)

2/3x + 5 = 1/2x + 6

2/3x - 1/2x = 6 - 5

1/6x = 1

x = 6

h)