Question

Tolong di bantu ya kak,besok dikumpulin a-b pakai cara
Nanti kuberi jwban terbaik

Answer 1

Bagian A

1. B

2. C
cara
3x +2 = 11
3x = 11 - 2
3x = 9
x = 3

3.D
cara
5x - 4 = 6x - 9
5x - 6x = - 9 + 4
-x = -5
x = 5

4. C
cara
1/2(x + 3) = 1/4(3x -1)
2(x +3) = 3x -1
2x + 6 = 3x - 1
2x - 3x = -1- 6
-x = -7
x = 7

5. B
cara
x + 5 = 11
x = 11 - 5
x = 6
maka
x + 33
6 + 33
39

6.A
cara
6x + 1 ≤ 4x + 9
6x - 4x ≤9- 1
2x ≤ 8
x ≤ 4
{0,1,2,3,4}

7 B
cara
2a + 10 > 3a - 2
2a - 3a > -2 - 10
-a > - 12
a < 12

8. B dan D
cara
2/3 x + 5 ≥ 9
2x + 15 ≥ 27
2x ≥ 27- 15
2x ≥ 12
x ≥ 6

9.
soal gak jelas, ada coretan spidol, gak tau di +/-

10 B
cara
x - 3 > 2/3(x - 4)
3x - 9 > 2(x - 4)
3x - 9 > 2x - 8
3x - 2x > -8 + 9
x > 1

bagian B
1.
a. tidak benar
b. benar

2.
2( x - 1) + 3(2x + 3) = 15
2x - 2 + 6x + 9 = 15
8x + 7 = 15
8x = 15 - 7
8x = 8
x = 1

3.
(3x +1)/2 - (x + 5)/3 = x -2
3(3x + 1) - 2(x + 5) =6(x - 2)
9x + 3-2x - 10=6x -12
7x - 7= 6x - 12
7x - 6x = -12 + 7
x = - 6

4.
3(2x + 2) ≤ 2(2x - 1)
6x + 6≤ 4x - 2
6x- 4x ≤ - 3 - 6
2x ≤ - 9
x ≤-4,5

5.
(2a +5)/4 - (4a - 6)/6 > 1/4
3(2a + 5) - 2(4a - 6) > 3
6a + 15 - 8a +12 > 3
-2a + 27> 3
-2a > 3 - 27
-2a > - 24
a < 12

^_^
cherry