1.

79, whereas 7 hooks and S pen、togel her costて77 Represent this sitjaǐon in-, books "ind 7 pens ingじthel Ltstthe form of linear equation in two variables

Answer»

Let price of one book is xLet price of one pen is y

Then according to the given condition5x + 7y = 79.....(1)7x + 5y = 77......(2)



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