Answer:
242.86
Explanation:
263 * 17/7 - 164 * 17/7 + 17/7
= 4471/7 - 2788/7 + 17/7
= 4471 - 2788 + 17 / 7
= 1683 + 17 / 7
= 1700/7 = 242.86
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