solve by substitution method 2 X + 9y = 5
3x + 4 y = 9
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Answer:
X=61/19, Y=-3/19
Explanation:
2X +9Y=5
2X=5-9Y
X=(5-9Y)/2 ----------(1)
3X + 4Y=9----------(2)
Putting the value of X in equation (2):-
3×(5-9Y)/2 + 4Y=9
(15-27Y)/2 + 4Y=9
(15-27Y + 8Y)/2 = 9
15-19Y=18
-19Y=18-15
Y= -3/19
putting value of Y in equation---(2):-
X= (5-9×-3/19)/2
X=(5 + 27/19)/2
X=[(95+27)/19]/2
X=122/38
X=61/19
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