Question

find solutions of the pair of liner equations
x-y=3 and 4x+2y=0

Answer 1

X - Y = 3-----------(1)
4X +2Y = 0-----------(2)
___________

multiplying equation 1 by 2 ,
then the equations will be

2X - 2Y =6
4X +2Y =0

adding equation 1 and 2

2X - 2Y = 6
+
4X + 2Y = 0
--------------------
6X -0 =6
6X = 6
:;X=6/6
-----------------
:;X=1
------------------


put x is equal to 1 in equation 1

X - Y = 3
1 - Y = 3
Y = 3- 1
---------------
:;Y = 2
---------------