Question

solve the following questions
x-y=1 ; x+y=3 ( solutions)
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Answer 1

Answer:

hope it help you

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Answer 2

Answer:

Step-by-step explanation:

x - y = 1     ---------> (1.)

x + y = 3    ---------> (2.)

add (1.) and (2.) =>    2x = 4  =>  x = 2

put x = 2 in (1.) =>   y = 2 - 1  => y = 1

( x , y ) = ( 2 , 1 )