Question

x+y=3,2x+3y=7 slove by substitution method​

Answer 1

Step-by-step explanation:

2x−3y=7 ----------------(1)

5x+y=9

y=9−5x-------------(2)

Now, substitute equation (2) in equation (1)

Then ,2x−3(9−5x)=7

2x−27+15x=7

17x=27+7

17x=34

x=34/17=2

y=9−5×2=9−10=−1

Therefore x is 2 and y is −1

Answer 2

Step-by-step explanation:

x+y=3-------------(2)×

2x+3y=7

2x+2y=6

2x+3y=7

-. -. -

------------------

-x=-1

x=1

put the value of x in 2

2x+3y=7

2×1+3y=7

2+3y=7

3y=7-2

3y=5

y=5/3