Odpowiedź:
a)
5 + (-3 1/6) × 0,6 = 5 - 19/6 * 6/10 = 5 - 19/10 = 5 - 1,9 = 3,1
b)
2 1/3 - 3,5 : 1 3/7 = 2 1/3 - 35/10 : 10/7 = 2 1/3 - 35/10 * 7/10 = 2 1/3 - 245/100
= 2 1/3 - 2,45 = 2 1/3 - 2 9/20 = 2 20/60 - 2 27/60 = -7/60
c)
5 1/3 - 7,25 - 3/4 = 5 1/3 - 7 1/4 - 3/4 = 5 1/3 - 8 = -2 2/3
d)
1 5/6 - 1 1/12 - 0,5 : 2/3 = 1 10/12 - 1 1/12 - 1/2 * 3/2 = 9/12 - 3/4 = 9/12 - 9/12 = 0
Szczegółowe wyjaśnienie:
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Odpowiedź:
a)
5 + (-3 1/6) × 0,6 = 5 - 19/6 * 6/10 = 5 - 19/10 = 5 - 1,9 = 3,1
b)
2 1/3 - 3,5 : 1 3/7 = 2 1/3 - 35/10 : 10/7 = 2 1/3 - 35/10 * 7/10 = 2 1/3 - 245/100
= 2 1/3 - 2,45 = 2 1/3 - 2 9/20 = 2 20/60 - 2 27/60 = -7/60
c)
5 1/3 - 7,25 - 3/4 = 5 1/3 - 7 1/4 - 3/4 = 5 1/3 - 8 = -2 2/3
d)
1 5/6 - 1 1/12 - 0,5 : 2/3 = 1 10/12 - 1 1/12 - 1/2 * 3/2 = 9/12 - 3/4 = 9/12 - 9/12 = 0
Szczegółowe wyjaśnienie: