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x⭕️ y=$$\frac{1}{x}$$+$$\frac{1}{y}$$
Which of the following statements must be true? (m and h are both positive integers)
Indicate all such statements.
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A.$$\frac{1}{m}$$ ⭕️ $$\frac{1}{h}$$=m+h
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B.m ⭕️ h=$$\frac{m+h}{mh}$$
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C.h ⭕️ m=m ⭕️ h
A,B,C显示答案
