a number increased by -22 is 45. find the number
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990 ÷ 45 = 22
45/22 is already an improper fraction. As a mixed number, it is 2 1/22.
To find the greatest 3-digit number divisible by both 5 and 9, we need to find the highest common multiple of 5 and 9 within the range of 100 to 999. The highest common multiple of 5 and 9 is 45. To find the greatest 3-digit number divisible by 45, we divide 999 by 45, which equals 22 with a remainder. Therefore, the greatest 3-digit number divisible by both 5 and 9 is 45 x 22 = 990.
You can find out at Proofhouse.com in the Colt tables.