Question

Find out which of the following equations have x=1, y=1 as a solution:
(a) 2x+5y=7
(b) 5x+3y=7
(C) 2x+3y=7
(d) none of these

Answer 1

Answer:

A is the answer

Step-by-step explanation:

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Answer 2

ANSWER:

(a) 2x + 5y = 7

=> 7xy = 7

=> xy = 1

(b) 5x + 3y = 7

=> 8xy = 7

=> xy = 7/8

(c) 2x + 3y = 7

=> 5xy = 7

=> xy = 5/7

Xy = 1 is the answer

A

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