Question

15. When a number is multiplied by 3, and 7 is
subtracted from it, it becomes 5 more than the
original number. Find the number.​

Answer 1

Answer:

The original number is 6.

Step-by-step explanation:

Let the number be x

According to question,

3x - 7 = x + 5

3x - x = 5 + 7

2x = 12

x = 6

The original number is 6.

Answer 2

To Find:-

• Find the number.

Given:-

• When a number is multiplied by 3, and 7 is subtracted from it, it becomes 5 more than the original number.

Solution:-

Let the unknown number be " x "

$\tt\implies \: 3x - 7 = 5 + x$

$\tt\implies \: 3x - x = 7 + 5$

$\tt\implies \: 2x = 12$

$\tt\implies \: x = \cancel\dfrac { 12 } { 2 }$

$\tt\implies \: x = 6$

Hence,

• $\tt \: The \: \: original \: \: number \: \: is \: \: 6$