Question

solve X + 2 Y is equal to 8 and 2 X + Y is equal 7​

Answer 1

Sol:

x + 2y = 8 ........{1}

2x + y = 7 ......{2}

Adding the equation 1 and 2

x + 2y = 8

+ 2x + y = 7

3x + 3y = 15

3 (x + y) = 15

x + y = 5 .......{3}

Substracting equation 1 from 2

2x + y = 7

- x + 2y = 8

x - y = -1...... {4}

Now, Adding equation 3 and 4

x + y = 5

+ x - y = -1

2x = 4

x = 2

Now, substituting x = 2 in equation 3

x + y = 5

2 + y = 5

y = 5 - 2

y = 3

Ans. (x,y) = (3,3) is the solution of the above equation.

-------"Amannn:))

Answer 2

x=2

y=3

this is a answers