Question

(і)
x+y=7
3х - 2y =11​

Answer 1

x=7-y

7-y3x-2y=11

7-y3x-2y=113×(7-y)-2y=11

7-y3x-2y=113×(7-y)-2y=1121-3y-2y=11

7-y3x-2y=113×(7-y)-2y=1121-3y-2y=11-5y=-21+11

7-y3x-2y=113×(7-y)-2y=1121-3y-2y=11-5y=-21+11-5y=-10

7-y3x-2y=113×(7-y)-2y=1121-3y-2y=11-5y=-21+11-5y=-10y=2

7-y3x-2y=113×(7-y)-2y=1121-3y-2y=11-5y=-21+11-5y=-10y=2x= 5 and Y= 2

7-y3x-2y=113×(7-y)-2y=1121-3y-2y=11-5y=-21+11-5y=-10y=2x= 5 and Y= 2X + Y = 7

7-y3x-2y=113×(7-y)-2y=1121-3y-2y=11-5y=-21+11-5y=-10y=2x= 5 and Y= 2X + Y = 7=> X = 7-Y ----(1)

7-y3x-2y=113×(7-y)-2y=1121-3y-2y=11-5y=-21+11-5y=-10y=2x= 5 and Y= 2X + Y = 7=> X = 7-Y ----(1)3x - 2y = 11-----(2)

7-y3x-2y=113×(7-y)-2y=1121-3y-2y=11-5y=-21+11-5y=-10y=2x= 5 and Y= 2X + Y = 7=> X = 7-Y ----(1)3x - 2y = 11-----(2)Putting the value of x from (1) in (2),

7-y3x-2y=113×(7-y)-2y=1121-3y-2y=11-5y=-21+11-5y=-10y=2x= 5 and Y= 2X + Y = 7=> X = 7-Y ----(1)3x - 2y = 11-----(2)Putting the value of x from (1) in (2),3(7-y) -2y = 11

7-y3x-2y=113×(7-y)-2y=1121-3y-2y=11-5y=-21+11-5y=-10y=2x= 5 and Y= 2X + Y = 7=> X = 7-Y ----(1)3x - 2y = 11-----(2)Putting the value of x from (1) in (2),3(7-y) -2y = 1121 -3y -2y = 11

7-y3x-2y=113×(7-y)-2y=1121-3y-2y=11-5y=-21+11-5y=-10y=2x= 5 and Y= 2X + Y = 7=> X = 7-Y ----(1)3x - 2y = 11-----(2)Putting the value of x from (1) in (2),3(7-y) -2y = 1121 -3y -2y = 1121 -5y = 11

7-y3x-2y=113×(7-y)-2y=1121-3y-2y=11-5y=-21+11-5y=-10y=2x= 5 and Y= 2X + Y = 7=> X = 7-Y ----(1)3x - 2y = 11-----(2)Putting the value of x from (1) in (2),3(7-y) -2y = 1121 -3y -2y = 1121 -5y = 115y = 21 -11

7-y3x-2y=113×(7-y)-2y=1121-3y-2y=11-5y=-21+11-5y=-10y=2x= 5 and Y= 2X + Y = 7=> X = 7-Y ----(1)3x - 2y = 11-----(2)Putting the value of x from (1) in (2),3(7-y) -2y = 1121 -3y -2y = 1121 -5y = 115y = 21 -115y = 10

7-y3x-2y=113×(7-y)-2y=1121-3y-2y=11-5y=-21+11-5y=-10y=2x= 5 and Y= 2X + Y = 7=> X = 7-Y ----(1)3x - 2y = 11-----(2)Putting the value of x from (1) in (2),3(7-y) -2y = 1121 -3y -2y = 1121 -5y = 115y = 21 -115y = 10y = 2

7-y3x-2y=113×(7-y)-2y=1121-3y-2y=11-5y=-21+11-5y=-10y=2x= 5 and Y= 2X + Y = 7=> X = 7-Y ----(1)3x - 2y = 11-----(2)Putting the value of x from (1) in (2),3(7-y) -2y = 1121 -3y -2y = 1121 -5y = 115y = 21 -115y = 10y = 2Putting the Value of y in (1),

7-y3x-2y=113×(7-y)-2y=1121-3y-2y=11-5y=-21+11-5y=-10y=2x= 5 and Y= 2X + Y = 7=> X = 7-Y ----(1)3x - 2y = 11-----(2)Putting the value of x from (1) in (2),3(7-y) -2y = 1121 -3y -2y = 1121 -5y = 115y = 21 -115y = 10y = 2Putting the Value of y in (1),x= 7-2

7-y3x-2y=113×(7-y)-2y=1121-3y-2y=11-5y=-21+11-5y=-10y=2x= 5 and Y= 2X + Y = 7=> X = 7-Y ----(1)3x - 2y = 11-----(2)Putting the value of x from (1) in (2),3(7-y) -2y = 1121 -3y -2y = 1121 -5y = 115y = 21 -115y = 10y = 2Putting the Value of y in (1),x= 7-2=> X= 5

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Answer 2

Answer:

X = 5

Y = 2

Step-by-step explanation: