Question

EXERCISE 17.3
1. The sum of three times a number and 15 is 42. Find the number.
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Answer 1

Answer:

let the no be x

according to question

3x+15=42

Step-by-step explanation:

3x=42-15

3x=27

x= 27/3=9

therefore the number is 9

1. hope it helps ..plz mark as brainlist

Answer 2

Answer:

let the unknown number be x.

3x + 15 = 42

3x = 42 - 15

3x = 27

x = 9

check:

if x = 9,

3x = 27

27 + 15 = 42