Evaluate 7 $×$ |− 15| − |− 9| $×$ 8.

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Solution

∵ |− 15| = 15 and |− 9| = 9
∴ 7 $×$ |− 15| − |− 9| $×$ 8 = 7 $×$ 15 − 9 $×$ 8
= 105 − 72
= 33
Hence, 7 $×$ |− 15| − |− 9| $×$ 8 = 33.

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