Question

solve x + 2y =2 and x-3y = 7 by cross multiplication method

Answer 1

According to 1st eqaution
x = 2 - 2y
so , putting it in 2nd eqaution in the palce of x ,
2-2y-3y=7
-5y =7-2
- 5y =5
y = -1
so, x = 2-2×-1
=2+2
=4

Answer 2

Answer:

x= 4, y= -1

Step-by-step explanation:

Given : $x +2y =2$

           $x-3y = 7$

To Find: Solve

Solution:

$x+2y =2$  --1

$x-3y = 7$   --2

Substitute value of x from 1 in 2

$2-2y-3y = 7$

$2-5y = 7$

$5y=-5$

$y=-1$

Substitute the value of y in 1

$x+2(-1) =2$  

$x-2 =2$  

$x=4$  

hence the solution of the given equations is x=4,y=-1