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Kerjakan soal berikut. 1. (+9) × (+4) 2. (+6) × (-7) 3. (-5) × (+10) 4. (-13) × (-2)

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Kerjakan soal berikut.

1.     (+9) × (+4)

2.     (+6) × (-7)

3.     (-5) × (+10)

4.     (-13) × (-2)

5.     (+2/5) × (-15)

6.     (-3/4) × (-7/12)

Pembahasan:

1.     (+9) × (+4) = 9 × 4 = 36

2.     (+6) × (-7) = -(6 × 7) = -42

3.     (-5) × (+10) = -(5 × 10) = -50

4.     (-13) × (-2) = 13 × 2 = 26

5.     (+2/5) × (-15) = -(2/5 × 15) = -6

6.     (-3/4) × (-7/12) = 3/4 × 7/12 = 7/16

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