Question

ajutor repede d au coroana

Answer 1

Răspuns:

Explicație pas cu pas:

a(b + c) = ab + ac = 2/15 + 11/75 = 10/75 + 11/75 = 21/75 = 7/25

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c(b - a) = cb - ca = bc - ac = 19/48 - 7/36 = 57/144 - 28/144 = 29/144

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a = 5/6

b + c = 7/20

c - d = 1/24

ab + 2ac - ad = ab + ac + ac - ad = a(b + c) + a(c - d) =

5/6 *7/20 + 5/6 * 1/24 = 7/24 + 5/144 = 42/144 + 5/144 = 47/144