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taint taint Jan 19, 2021

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

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Answer:

3x+5y=9

5x+3y=7

9x+15y=27

25x+15y=35

- - = -

-16x = -8

x= 1/2

3*1/2+5y=9

5y=9-3/2

5y= 15/2

y= 15/3/5

y== 25

x+y. = 25+1/2= 51/2

v

25.5. answer

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Jan 19, 2021
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