Question

1) For 4x+5y=10 and 5x+4y= 17 find x+y​

Answer 1

Answer:

x+y=3

Step-by-step explanation:

4x+5y=10 as eq 1

5x+4y=17 as eq 2

now add eq 1+2

9x+9y=27

9(x+y)=27

x+y=27/9

x+y=3

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