Question

3. The sum of three
consecutive multiple of 9 is
81 the smallest number is​

Answer 1

Answer:

Step-by-step explanation:

Let the numbers be x, x+9, x+18

x+x+9+x+18=81

3x+27=81

3x=81-27

3x=54

x=54/3

x=18

x+9=18+9=27

x+18=18+18=36

Hence the smallest number is 18.

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Answer 2

Answer:

The number is 18.

Step-by-step explanation:

Let the multiples be 9x, 9x+9 and 9x+18.

According to question,

9x+9x+9+9x+18 = 81.

=) 27x+27 = 81

=) 27x = 54

=) x= 2

Therefore the multiples are 18, 27 and 36.

Hence the smallest number is 18.