solve simulation equation 2x-3y=9 ; 2x +y=13
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There are three methods but I have shown this method which is too easy to solve for you
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=> 2x - 3y =9 ; 2x + y = 13
2x - 3y =9...........(i)
2x + y =13...........(ii)
y = 13 -2x.........(iii)
substitute y = 13 - 2x in equation (i)
2x - 3(13 -2x ) =9
2x - 39 - 6x = 9
2x - 6x = 9 + 39
4x = 48
x =12
Put x =12 in equation (iii)
y = 13 -2x
y = 13 - 2(12)
y = 13- 24
y = -11
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