It is known that a of 2 is equal to B of 3, a ≠ 0, B ≠ 0, the value of a + B of A-B is A.5 B.-5 C.1 D.-1
Two a is three B
∴a=2b/3
(a+b)/(a-b)=(2b/3 +b)/(2b/3-b)=(5b/3)/(-b/3)=-5
Choose B
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