Question

the sum of two numbers is 28 If the first number is 3 times than 2 number . then smaller number is ?​

Answer 1

Answer: The second number is 7.

Step-by-step explanation:

Let the first number be x

Let the second number be y

x+y=28

The second number is 3 times the second number.

3x=y

x+3x=28

4x=28 (we added the x values becuase they are the same)

x=$\frac{28}{4}$ ( Divide both sides by 4)

x=7

Go back to our equation

x+y=28

Remember that the first value(x) is 3 times the second value(y)

Because of the 3 times more than

3x+y=28

3(7)+y=28

21+y=28 (we take 21 to the other side and it changes from positive to negative)

y=28-21

y=7

The first number is 21 and the second number(smaller number) is 7