Question

Tentukan penyelesaian dari persamaan linear berikut
1. 4 a + 5 = 37
2. 8x -8 = -24
3. 2x -1/2 =2/3
4. -3/4 y =-3/8
5. 1/4 a = 2/3
6. p/3 =-1
7. 5p -8 =7p +12
8. 9 - 2y = 4y-6
9. 4 ( y -3 ) =11 y +7
10. 5 ( y + 2 ) =9 y-15

Answer 1

Verified answer

1) 4a + 5 = 37
4a = 37 - 5
4a = 32
a = 8

2) 8x - 8 = - 24
8x = - 24 + 8
8x = - 16
x = - 2

3) 2x - ½ = ⅔
2x = ½ + ⅔
2x = 3/6 + 4/6
2x = 7/6
x = 7/6 ÷ 2
x = 7/6 × ½
x = 7/12

4) - ¾y = - 3/8
y = - 3/8 ÷ - ¾
y = - ⅜ × -4/3
y = ½

5) ¼a = ⅔
a = ⅔ ÷ ¼
a = ⅔ × 4/1
a = 8/3

6) p/3 = - 1
p = - 1 × 3
p = - 3

7) 5p - 8 = 7p + 12
5p - 7p = 12 + 8
- 2p = 20
p = - 10

8) 9 - 2y = 4y - 6
- 2y - 4y = - 6 - 9
- 6y = - 15
y = - 15/-6
y = 5/2

9) 4 ( y - 3) = 11y + 7
4y - 12 = 11y + 7
4y - 11y = 7 + 12
- 7y = 19
y = - 19/7

10) 5 ( y + 2 ) = 9y - 15
5y + 10 = 9y - 15
5y - 9y = - 15 - 10
- 4y = - 25
y = 25/4