State two proteins in blood which are responsible for determine the blood group of a person

DNA

Explanation:

A person DNA determines the type of enzymes they have, and, therefore, the type of sugar antigens that end up on their red blood cells . In contrast , the antigens of the Rh blood group are proteins . A person DNA holds the information for producing the proteins antigens

the answer to your question is b

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

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