have infinitely many solutions.Q.24. Solve the following pair of linea

1.	have infinitely many solutions.Q.24. Solve the following pair of linear equations by substitution method:2x + 7y = 9; 8x - y = 7
Answer» x=1,y=1 is the right answer 2x + 7Y = 9............(1)8X - Y = 7...........(2)Y = 8X -- 7......(3)put equation 3 in 12X + 7(8X - 7) = 92x + 56x - 49 = 958x = 9+4958x = 58x = 1 put x in equation 3 Y = 8×1-7Y = 8-7Y = 1 X = 1 y= 1 is the correct answer 2x+7y=97y=9-2xy= 9 -2x/7 putting the value of y in eq28x-y=78x-(9-2x)/7=756x-9+2x/7=758x-9=4958x=49+9=58x=1.so y= 9-2x/7 = 9-2×1/7 = 7/7=1 x=1 and y=1 crecct answer y=1. X=1 is the right answer

have infinitely many solutions.Q.24. Solve the following pair of linear equations by substitution method:2x + 7y = 9; 8x - y = 7

Answer»

x=1,y=1 is the right answer

2x + 7Y = 9............(1)8X - Y = 7...........(2)Y = 8X -- 7......(3)put equation 3 in 12X + 7(8X - 7) = 92x + 56x - 49 = 958x = 9+4958x = 58x = 1

put x in equation 3

Y = 8×1-7Y = 8-7Y = 1

X = 1 y= 1 is the correct answer

2x+7y=97y=9-2xy= 9 -2x/7 putting the value of y in eq28x-y=78x-(9-2x)/7=756x-9+2x/7=758x-9=4958x=49+9=58x=1.so y= 9-2x/7 = 9-2×1/7 = 7/7=1

x=1 and y=1 crecct answer

y=1. X=1 is the right answer