Question

oblicz

A)

1:5 / (83 5/18 - 85 7/20) : 2 2/3

B)

(3 1/12 + 4,375) : 19 8/9 / 2 5/8 - 2/3 × 2 5/14

/ ten ukosnik to kreska ułamkowa. prosze pomozcie bo jestem zielony z matmy, najlepiej do 19 zebyscie zrobili. z gory dzieki daje 30pkt

Answer 1

A)

1:5 / (83 5/18 - 85 7/20) : 2 2/3 =
= 0,2 / (1499/18 - 1707/20) : 8/3 =
= 0,2 / (14990/180 - 15363/180) : 8/3 =
= 0,2 / -373/180 : 8/3 =
= 0,2 / -373/180 * 3/8 =
= 0,2 / 373/480 =
= 0,2 : 373/480 =
= 2/10 * 480/373 =
= 96/373

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B)

(3 1/12 + 4,375) : 19 8/9 / 2 5/8 - 2/3 × 2 5/14 =
= ( 37/12 + 4 3/8) : 179/9 / 21/8 - 2/3 x 33/14 =
= ( 37/12 + 35/8) : 179/9 / 21/8 - 11/7 =
= ( 74/24 + 105/24) : 179/9  / 147/56 - 88/56 =
= 179/24 : 179/9  /  59/56 =
= 179/24 * 9/179  /  59/56 =
= 9/24 : 59/56 =
= 9/24 * 56/59 =
= 126/354

Answer 2

Załącznik.