Tolong dong kak pliis di jawab semua dgn bnr besok sdh hrs di kumpulkan
Jawab:
1. x = 30
2. x = 20
3. x = 20
4. x = 20
5. x = 8
6. x = 15
Penjelasan dengan langkah-langkah:
1. 2x + 10 = 70
2x = 60
x = 30
2. 120 = 4x + 40
4x = 120-40
4x = 80
x = 20
3. 3x + 60 = 120
3x = 120 - 60
3x = 60
x = 20
4. 3x + 15 = 75
3x = 75-15
3x = 60
x = 20
5. 5x = 40
x = 8
6. 130 = 7x + 25
7x = 130 - 25
7x = 105
x = 15
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