if X + Y is equal to 2 and 2x minus Y is equal to 1 then the value of M if m x + Y is equal to zero is
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Answer:
-1
Step-by-step explanation:
x+y=2 eqn 1
2x-y=1
2x+2y=2 from eqn 1
solving we get x=1 and y=1
mx+y=0
m(1)+1=0
m=-1
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