please help me...........................
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Answer:
9.
725 × ( -45 ) + ( -725 ) × 55
725 × ( -45 ) - 725 × 55
725 × 5 ( -9 - 11)
3625 ( -20 )
= -7250
10.
53/4 × 28 = 53 × 7 = 372 km
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