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Hitunglah. 1. 10 + 2 × (-7) 2. (-4) – 15 : (-3) 3. -5 × (6 – 9) 4. 18 + 4 × (1 – 7)

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Hitunglah.

1.     10 + 2 × (-7)

2.     (-4) – 15 : (-3)

3.     -5 × (6 – 9)

4.     18 + 4 × (1 – 7)

5.     16 : (-4)2

6.     12 – 52

Pembahasan:

1.     10 + 2 × (-7) = 10 – 14 = -4

2.     (-4) – 15 : (-3) = -4 + 5 = 1

3.     -5 × (6 – 9) = -5 × (-3) = 15

4.     18 + 4 × (1 – 7) = 18 + 4 × (-6) = 18 – 24 = -6

5.     16 : (-4)2 = 16 : 16 = 1

6.     12 – 52 = 12 – 25 = -13

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