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pls help me in my math question I don't know what is the answer​

Pls Help Me In My Math Question I Dont Know What Is The Answer class=

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6. I. (5+6) + 10 = 5 + (6+10)

II. 4 × (5 × 2) = (4 × 5) × 2

7. I. 2(3+5) = (2×3) + (2×5)

8. I. 15 + 0 = 15

II. 15 × 1 = 15

9. I. 140 + 60 = 60 + 140

II. 25 × 30 = 30 × 25

10. I. 5 - (+5) = + 5 - 5

II. 263 × 0 = 0

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