Science, asked by vnikhade800, 11 months ago

solve by substitution method 2 X + 9y = 5
3x + 4 y = 9​

Answers

Answered by abhisheksharma68
0

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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