13.Solve 99x + 101y = 499; 101x + 99y = 501.
Answers
Answered by
3
Answer:
x = 3
y = 2
Step-by-step explanation:
See in the attachment .
Attachments:
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Answered by
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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