Odpowiedź:
a)
(1 1/2 + 2 1/5) * 10 = (1 5/10 + 2 2/10) * 10 = 3 7/10 * 10 =
= 37/10 * 10 = 37
b)
(1 1/5 + 5/6) * 1 7/8 = (1 6/30 + 25/30) * 1 7/8 = 1 31/30 *15/8 =
= 61/30 * 15/8 = 61/2 * 1/8 = 61/16 = 3 13/16
c)
(14/5 - 21/20) * 4/7 = (56/20 - 21/20) * 4/7 = 35/20 * 4/7 =
= 5/5 * 1 = 1 * 1 = 1
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Odpowiedź:
a)
(1 1/2 + 2 1/5) * 10 = (1 5/10 + 2 2/10) * 10 = 3 7/10 * 10 =
= 37/10 * 10 = 37
b)
(1 1/5 + 5/6) * 1 7/8 = (1 6/30 + 25/30) * 1 7/8 = 1 31/30 *15/8 =
= 61/30 * 15/8 = 61/2 * 1/8 = 61/16 = 3 13/16
c)
(14/5 - 21/20) * 4/7 = (56/20 - 21/20) * 4/7 = 35/20 * 4/7 =
= 5/5 * 1 = 1 * 1 = 1