Question

Oblicz:
a)
[tex]3.45 + 1 \frac{1}{3} - 1.25 = [/tex]
b)
[tex]5 \frac{2}{3} - 2.2 + 1 \frac{2}{2} = [/tex]
c)
[tex]( - 2 - \frac{3}{4} ) \div ( \frac{1}{4} + 2)[/tex]

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Answer 1

Odpowiedź:

Szczegółowe wyjaśnienie:

=3 45/100 +1 1/3 -1 25/100=3 9/20 +1 1/3 -1 1/4=3 27/60+1 20/60 -1 15/60=4 47/60 -1 15/60=3 32/60=3 8/15

=5 2/3 -2 2/10+2=5 2/3 -2/10=5 20/30 -6/30=5 14/30=5 7/15

= -2 3/4 : 2 1/4=11/4 : 9/4=11/4×4/9=11/9=1 2/9