Question

If 3x+5y=9 and 5x+3y=7 then what is the value of x+y full solution..

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Answer 1

Answer:

x+y=2

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Step-by-step explanation:

3x + 5y = 9    and    5x + 3y = 7

=>  ( 3x + 5y ) + ( 5x + 3y ) = 9 + 7 = 16

=> ( 3x + 5x ) + ( 5y + 3y ) = 16          (just changed the order of adding terms)

=> 8x + 8y = 16

=> 8 ( x + y ) = 16

=> x + y = 16 / 8 = 2

Answer 2

good morning friend.
your answer is
3x+5y=9
5x+3y=7
=8x+8y=16
=x+y=2
thank you for asking question.