Question

Tolong krjkn no 23 - 26 pakai cara jwb yg paling lengkap dan mudah di pahami akan saia jadikan jwb an terbaik !!!! terimakasih.

Answer 1

Semoga membantuu....

Answer 2

Hai kak !
Salam kenal
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23)
1/2 (x - 6) = 3/4 (x - 8)
<=> 1/2x - 3 = 3/4x - 6
<=> 1/2x - 3/4x = - 6 + 3
<=> 2/4x - 3/4x = - 3
<=> - 1/4x = - 3
<=> x = - 3 : - 1/4
<=> x = - 3 × - 4/1
<=> x = 12/1
<=> x = 12 ==> JAWABAN

24)
K = 2 × (p + l)
<=> 40 = 2 × ((3x + 4) + (4x - 5))
<=> 40 = 2 × (3x + 4 + 4x - 5)
<=> 40/2 = 3x + 4x + 4 - 5
<=> 20 = 7x - 1
<=> 20 + 1 = 7x
<=> 21 = 7x
<=> 7x = 21
<=> x = 21/7
<=> x = 3 cm

Maka,
Panjang
= 3x + 4
= 3(3) + 4
= 9 + 4
= 13 cm ==> JAWABAN

Lebar
= 4x - 5
= 4(3) - 5
= 12 - 5
= 7 cm ==> JAWABAN

25)
8.000 + 3.500x ≤ 40.000
<=> 3.500x ≤ 40.000 - 8.000
<=> 3.500x ≤ 32.000
<=> x ≤ 32.000/3.500
<=> x ≤ 9,14 km ==> JAWABAN

26)
4x + 6 ≤ 12 + 2x
4x - 2x ≤ 12 - 6
2x ≤ 6
x ≤ 6/2
x ≤ 3

Maka,
HP :
x = {..., -2, -1, 0, 1, 2, 3} ==> JAWABAN

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Mapel : Matematika
Katagori : Persamaan dan Pertidaksamaan Linear Satu Variabel

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Semoga membantu
Semangat belajarnya kak !