Question

double of a number added to 21 gives 51.find the number​

Answer 1

Answer:

Hence the number is 15

Step-by-step explanation:

• Let the number be X

According to question:- double of a number added to 21 gives result 51

We can say it. 2X+21 = 51

Solution:-

$2x + 21 = 51 \\ 2x = 51 - 21 \\2x = 30 \\ x = \frac{30}{2} \\ x = 15$

Hence the number is 15

Answer 2

Answer:

Double of a number added to 21 gives 51. Find the number.