Question

JU I linear equation.
3 The cost of a book is 20 more than twice the cost of
a pen. Express this statement as a linear equation.
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Answer 1

Answer:

let cost of book=x

let cost of pen=y

x=20+2y

Answer 2

Answer:

let the cost of book be x

and cost of pen be y

according to the question,

x=20+2y

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