Question

a/b+c/d basic formula​

Answer 1

Answer:

If a : b = c : d, we write a : b :: c : d and we say that a, b, c, d are in proportion. Here a and d are called extremes, while b and c are called mean terms. Product of means = Product of extremes. Thus, a : b :: c : d (b x c) = (a x d).

Answer 2

Answer:

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Step-by-step explanation:

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