Question

write the following cases in the form of algebraic expression using number, variable and signs of basic operating
the sum of three times a number and 15 is 42​

Answer 1

Answer:

3x+15=42

Step-by-step explanation:

let say that number x then 3 times will be 3x

and he is asking to add 15 to it

and the resultant =42

so 3x+15=42

Answer 2

Answer:

let the no. be X

Acc. to question

3x+15=42

3x=42-15

3x=27

X=27/3

X=9