Question

nikesh bought a maths text book and an English textbook for the sum of 80.Express this as a linear equation in two variables and also write three solution to it​

Answer 1

x+y=80

Explanation:

let maths book = x

let english book = y

x+y=80 is the equation.

3 solutions:

x+y=80, x=40, y=40

x+y=80, x=60, y=20

x+y=80, x=70, y=10