Math, asked by swethavsky, 11 months ago

13.Solve 99x + 101y = 499; 101x + 99y = 501.

Answers

Answered by tahseen619
3

Answer:

x = 3

y = 2

Step-by-step explanation:

See in the attachment .

Attachments:
Answered by smitamahapatra2090
1

Answer:

x = 3 , y = 2

Step-by-step explanation:

99x + 101y = 499 , 101x + 99y = 501

      ----->(1)                   ----->(2)

(1) + (2)

200x + 200y = 1000

⇒ 200(x + y) = 1000

⇒ x + y = 5  ----->(3)

(1) - (2)

-2x + 2y = -2

⇒ -2(x - y) = -2

⇒ x - y = 1  ----->(4)

(3) + (4)

⇒ 2x = 6

⇒ x = 3

Sub x = 3 in (4)

⇒ 3 - y = 1

⇒ y = 3 - 1

⇒ y = 2

∴ x = 3 , y = 2

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