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x+y=7,3x-2y=11 ആയാൽ x ന്റെയും y യുടെയും വിലകളുടെ വ്യത്യാസം?

A7

B9

C3

D8

Answer:

C. 3

Read Explanation:

x+y=7........(1) 3x-2y=11......(2) (1)*3=3x+3y=21........(3) (3)-(2)=5y=10 y=2 x+y=7,y=2,x=7-2=5 x-y=5-2=3


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