Mohon bantu kak ......
Penjelasan dengan langkah-langkah:
- 17. 2(2x - 3) = 3(x+1)
- 4x - 6 = 3x + 3
- x = 9
- x - 3 = 9 - 3 = 6(B)
- 18. 5x - 3y = 25 dikali 2
- 3x + 2y = -4 dikali 3
- 19x = 38
- x = 2
- 5(2) - 3y = 25
- 10 - 3y = 25
- -3y = -15
- y = -5
- y - 4x = -5 - 8 = -13(B)
- 19. -a + b = 7
- 3a + b = -5
- -4a = 12
- a = -3
- 3 + b = 7
- b = 4
- -6a + b = -6(-3) + 4 = 18 + 4 = 22(D)
- 20. 17 11 = 17 × 11 = 187(B)
Semoga membantuu
[answer.2.content]
