Question

Solve the following pair of linear equations using substitution method:- 2x + 3y + 5 = 0 ; 5x − 3y + 9 = 0​

Answer 1

Step-by-step explanation:

method 2x+3y=9 , 3x+4y=5

Easy

share

Share

Answer

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(

3

9−2x

)=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.