anda bisa melihat jawabannya yang lebih tepat

1. a. 2p-13 = 5

2p = 5 + 13  

p = 18/2

p = 9  

b. 3t = 4-t

3t+t = 4

4t = 4

t = 1

c.3a + 4 = 12 - a

3a + a = 12 - 4

4a = 8

a = 2

d.a + 1 = 9/7

a = 9/7 - 1  

a = 9/9 - 7/7

a = 2/7  

e.1/2 (x - 5) = 3x + 15

1/2x-5/2 = 3x + 15

1/2x-3x = 15 + 5/2

-5/2x = 35/2

70x = - 10

x = -1/7

2.tentukan nilai x yang menjadi penyelesaian dari setiap persamaan berikut!

a.4x - 14 = 2(5 - 2x)

4x - 14 = 10 - 4x

4x+ 4x = 10+14

8x = 24

x = 3

b.5x + 4 = 3(3x + 8)_

5x + 4 = 9x + 24

5x - 9x = 24 - 4

-4x = 20

x = -5

c.2(3x - 7) = 6 - 4x

6x - 14 = 6 - 4x

10x = 20

x = 2

d.3(2x + 10) = x -5

6x + 30 = x -5  

-5x = 35

x = -7

3.tentukan nilai x yang menjadi penyelesaian dari persamaan berikut!

a.x - 13 = 1/4x + 5

x + 1/4x = 5 + 13

3/4 x = 18

3x = 72

x = 24

b.(x + 3) = 1/4(3x -1)

x + 3 = 3/4 x - 1/4

1/4x = - 11/4

x = -11

c.15/4 - 3/y = 6/y

15/4= 6/y + 3/y

15/4 = 9/y

y =36/15 -----> 12/5

d.13/6 + 1/3y = 9/y

13/6 = 9/y - 1/3y

13/6 = 27 /3y- 1/3y

13/6 = 26/3y

39y = 156

y = 156/39

y = 52/13