Question

solve using the method of cross multiplication 2x+y=23, 4x-y=19​

Answer 1

Step-by-step explanation:

2x + y =23

y = 23-2x

put in equn 2, .

4x - (23-2x) =19

4x -23+2x =19

6x = 42

x =42/6=7

y = 23-2(7)=23-14=9

This linear equation is solved by substitution method. It is the easiest methods to solve pair of linear equation.