Respuesta :

sam721021

Answer:

x=# of boys

x+7=# of girls

x+x+7=25

2x+7=25

2x=25-7

2x=18

x=18/2

x=9 boys

x+7=16 girls

 

If you don't understand variables use trial and error.

 

Boys     Girls

1           8

2           9

3           10

4           11

5           12

6           13

7           14

8           15

9           16   9+16=25 students

 

You could start this way...

 

Boys     Girls

12        13

11        14

10        15

9          16     16 is 7 more than 9

varshamittal029

There are 8 boys in the class.

What is an equation?

A mathematical statement with an equality symbol in between two algebraic expressions is called an equation.

How to solve the problem?

Let the number of boys be x. Then the number of girls will be x+7 as per the question.

So, Total number of students = number of boys + number of girls = 23

or, x+x+7=23

or, 2x+7=23

or, 2x=16

or, x=8

Thus the number of boys in a class is 8.

To learn more about equations visit- https://brainly.com/question/10413253?referrer=searchResults

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