Question

The cost of 2 pencils is same as the cost of 5 erasers. express the statement as a linear equation in two variables.

Answer 1

let cost of 1 pencil be x
and eraser be y
so, 2x=5y
2x-5y=0

Answer 2

let the cost of pencils be xlet the cost of erasers be y
according to the question,     algebrically,    
     2x=5y