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5. Which of the following is not true? (a) (7 + 8) + 9 = 7 + (8 + 9) (b) (7 x 8) x 9 = 7 x (8 x 9) (c) 7 + 8 x 9 = (7 + 8) x (7 + 9) (d) 7 x (8 + 9) = (7 x 8) + (7 x 9) |
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Answer» ONG>Step-by-step EXPLANATION: (c) is correct (a) 15+9 = 7+17 24 = 24 (b) 56 ×9 = 7×72 504 = 504 (c) 7 + 72 = 15 × 16 79 ≠ 240 (d) 7 × 17 = 56 + 63 119 = 119 |
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