Question

Solve by substitution method
iii) 2x + 3y = 9, 3x + 4y = 5 ​​

Answer 1

Step-by-step explanation:

We have,

2x+3y=9 ……. (1)

3x+4y=5 …… (2)

Now,

y=

3

9−2x

On putting the value of y, in equation (2), we get

3x+4( 39−2x)=5

3x+ 3

36−8x =5

9x+36−8x=15

x=15−36

Now, put the value of x in equation (1), we get

y= 3

9−2(−21)

y= 3

9+42

y= 3

51 =17

Hence, this is the answer.

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