Question

the expression of 6 less than thrice a number x​

Answer 1

Answer:

3x-6

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Answer 2

As per the given question, let the number be m.

three times the number 'm ' is 3.m or 3m.

3

(

m

)

- 6 = 15.

3m -6 = 15

add 6 to both sides;

3m -6 + 6 = 15 + 6

3m = 21

dividing both the sides by 3 , we get;

3m /3 = 21 / 3

m = 7