Question

tha sum of three times a number and 15 is 42 find tha number

Answer 1

Let the no. be x

ATQ,

3x+15 =42

3x =42-15

x =27/3

x =9

Thus,

The no. is 9..

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Answer 2

let number be x
ATQ,

3x+15=42
3x=42-15
3x=27
x=9

Required number is 9.