Question

the cost of 2 pencils and 3 erasers is 9 and the cost of 4 pencils and 6 erasers is 18. Find the cost of each pencil and each eraser. By elimination method ??
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Answer 1

Answer:

let the cost of each pencil be x

and the cost of each eraser be y

so according to the question we have two equation

1. 2x + 3y=9
2. 4x + 6y=18

but I think these two equations have infinite solution because they are coinciding each other

Answer 2

Step-by-step explanation:

the given pair of solutions are coincident and are consistent so they have infinitely many solutions