Hitunglah. 1. (+6) × (+5) 2. (-7) × (-8) 3. (+12) × (-3) 4. (-2) × (+10)

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kali ini kita akan membahas soal berikut nya…
Hitunglah. 1. (+6) × (+5) 2. (-7) × (-8) 3. (+12) × (-3) 4. (-2) × (+10)
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