Question

solve by elimination method 2x+5y=17 ,4x+7y=25​

Answer 1

Answer:

y=3,x=1.,,,....,,,...

Answer 2

Answer:

Solution :-

◘ 2x + 5y = 17 and 4x + 7y = 25 by elimination method.

2x + 5y = 17 . . . . (1)

4x + 7y = 25 . . . . (2)

❃ Multiply equation (1) by 2, we get

4x + 10y = 34 . . . . (3)

4x + 7y = 25 . . . . .(4)

❖ Adding (3) and (4) we get,

4x + 10y = 34

4x + 7y = 25

(-) (-) (-)

_______________

3y = 9

y = 9/3

y = 3

✯ Substituting the value of y = 3 in equation (1) we get,

✭ 2x + 5y = 17

➞ 2x + 5(3) = 17

➞ 2x + 15 = 17

➞ 2x = 17 - 15

➞ 2x = 2

➞ x = 2/2

➞ x = 1

∴ The value of x = 1, y = 3 is the solution of the system of the given equations.