x + 2y = -1 ;. 2x - 3y = 12
by substitution method
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x+2y= -1.........(1)
2x-3y= 12..........(2)
from equation (1)
put x = -1-2y........in equation (2)........(3)
2(-1-2y)-3y = 12
-2-4y-3y = 12
-7y = 14
y= -2
Now put the Value of y in (3)
x= -1-2y
x= -1-2(-2)
x= -1 +4
x= 3
Hope this helps you....✌
2x-3y= 12..........(2)
from equation (1)
put x = -1-2y........in equation (2)........(3)
2(-1-2y)-3y = 12
-2-4y-3y = 12
-7y = 14
y= -2
Now put the Value of y in (3)
x= -1-2y
x= -1-2(-2)
x= -1 +4
x= 3
Hope this helps you....✌
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