Question

Q.5 i , ii please answer

Answer 1

5.(1)

4x+5y=9

5x+4y=18

add both equations

9x+9y=27

x+y=3................................1

now subtract equations

x-y=9.................................2

now add 1 and 2

2x=12

x=6

y=-3

(2)

x+y=2

-x+y=5

add equations

2y=7

y=3.5

x=-1.5

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