Math, asked by shivakittu, 4 months ago

form a linear pair equations from 5 books and 7 pens together cost 79 and 7 books and 5 pens together cost 77

Answers

Answered by Divyaballakuraya

0

Answer:

5x + 7y = 79

7x + 5y = 77

Step-by-step explanation:

Let the cost of each book be ' x'

Let the cost of each pen be ' y '

Then the linear equation will be

5 books and 7 pens together cost 79

5x + 7y = 79

7 books and 5 pens together cost 77

7x + 5y = 77

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