9 m 20 cm - 7 m 30 cm = 9.2 m - 7.3 m = 1.9 m = 1 m 90 cm
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8/20, 7/20, 6/20, 6/20 etc, and 9/21, 9/30, 9/40, 9/50, 9/100, 9/1000 etc
Let x be the fraction you seek. x + 2/3 = 9/10 Find common denominator: x + 20/30 = 27/30 x = 7/30 Check: 7/30 + 20/30 = 27/30 27/30 = 27/30
56, 8, 72, 9
63 cm2
887