Question

1) If x+y=11; 2x-3y=7 find the solutions of x,y
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Answer 1

Answer:

x=8 and y=3

Step-by-step explanation:

x+y=11 :- equation no 1

2x-3y=7 :- equation no 2

multiply equation no 1 by 3

3 (x+y=11)

ie 3x+3y=33 :- equation no 3

add equation no 2 and no 3

2x-3y=7

+ 3x+3y=33

_________

5x 40 (-3 yand +3y geta cancelled )

x = 40/5

x= 8

put x=8 in equation no 1

x+y =11

8+y=11

y=11-8

y =3

(x,y) (8,3)