Question

The sum of two numbers is 21 if the larger number is X then write the smaller number.
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Answer 1

Answer:

7

Step-by-step explanation:

21+2x+x

3x=21

x=21/3

x=7

Answer 2

Given,

The sum of two numbers = 21

Larger number = X

To find,

The smaller number.

Solution,

The smaller number will be (21-X).

We can easily solve this problem by following the given steps.

According to the question,

We have:

The sum of two numbers = 21

Larger number = X

Now, let's take the smaller number (or in other words second number) to be Y.

Now, converting the first given statement into an expression:

(X+Y) = 21

Moving X from the left-hand side to the right-hand side will result in the change of the sign from plus to minus,

Y = (21-X)

Hence, the smaller number is (21-X).