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2. 8x = a8 => × = a
3. 3x - 2 = 4 => 3x = 4 + 2 => 3x = 6 => x = 6÷3 = 2
4. 5y = y - 46 => 5y - y = - 46 => 4y = -46 => y = -46 ÷ 4 = -11,5
5. 2q + q = 4 - 2q => 2q + q + 2q = 4 => 5q = 4 => q = 4 ÷ 5 = 0,8
6. tak tahu
7. 3a + L = 7 => a = (7 - L) ÷ 3
8. 2r - r = -25 - 16 = -41 => r = -41
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maaf untuk no 6, 7 , 8 saya kurang yakin..