1 dm = 10 cm so 7.5 dm/90 cm = 75 cm / 9 cm = 75/9 = 25/3
It is: (9/75)*100 = 12
let X = first number let Y = 2nd number X + Y = 75 X = 5Y + 9 5Y + 9 + Y = 75 6Y = 75-9 = 66 Y = 11 X = 75-11 = 64 Ans: 64,11
75
75/9
1 dm = 10 cm so 7.5 dm/90 cm = 75 cm / 9 cm = 75/9 = 25/3
180
It is 45
It is: (9/75)*100 = 12
The LCM is: 360
1260
6. To check for divisibility by 9, add the digits of the number together and if the sum is divisible by 9, then the original number is divisible by 9. If the test is repeated on the sum(s) until a single digit remains, then this is the remainder when the original number is divided by 9. Subtracting this remainder from 9 will give the smallest number that needs to be added to to the original number to make it divisible by 9. For 75: 7 + 5 = 12 1 + 2 = 3 so 75 ÷ 9 has a remainder of 3, therefore add 9 - 3 = 6 to 75 to make it divisible by 9. (75 + 6 = 81 = 9 x 9).
let X = first number let Y = 2nd number X + Y = 75 X = 5Y + 9 5Y + 9 + Y = 75 6Y = 75-9 = 66 Y = 11 X = 75-11 = 64 Ans: 64,11
For the values: 12, 9, 5 the LCM is: 180
The LCM of the given three numbers is 315
12
75