Wykonaj działania (pamiętaj o ich kolejności)
[tex]a. ∣1.2×(−3 \ \textless \ br /\ \textgreater \ 4\ \textless \ br /\ \textgreater \ 3\ \textless \ br /\ \textgreater \ \ \textless \ br /\ \textgreater \ )+ \ \textless \ br /\ \textgreater \ 2\ \textless \ br /\ \textgreater \ 1\ \textless \ br /\ \textgreater \ \ \textless \ br /\ \textgreater \ +(−0.5)∣÷∣3 \ \textless \ br /\ \textgreater \ 4\ \textless \ br /\ \textgreater \ 3\ \textless \ br /\ \textgreater \ \ \textless \ br /\ \textgreater \ ×(−1+ \ \textless \ br /\ \textgreater \ 7\ \textless \ br /\ \textgreater \ 2\ \textless \ br /\ \textgreater \ \ \textless \ br /\ \textgreater \ )−1∣\ \textless \ br /\ \textgreater \ [/tex]
[tex]b. \ 1 \frac{7}{10} \times 45 - \frac{3}{4} \times 26 [/tex]
[/tex]
[tex]a. ∣1.2×(−3 \ \textless \ br /\ \textgreater \ 4\ \textless \ br /\ \textgreater \ 3\ \textless \ br /\ \textgreater \ \ \textless \ br /\ \textgreater \ )+ \ \textless \ br /\ \textgreater \ 2\ \textless \ br /\ \textgreater \ 1\ \textless \ br /\ \textgreater \ \ \textless \ br /\ \textgreater \ +(−0.5)∣÷∣3 \ \textless \ br /\ \textgreater \ 4\ \textless \ br /\ \textgreater \ 3\ \textless \ br /\ \textgreater \ \ \textless \ br /\ \textgreater \ ×(−1+ \ \textless \ br /\ \textgreater \ 7\ \textless \ br /\ \textgreater \ 2\ \textless \ br /\ \textgreater \ \ \textless \ br /\ \textgreater \ )−1∣\ \textless \ br /\ \textgreater \ [/tex]
[tex]b. \ 1 \frac{7}{10} \times 45 - \frac{3}{4} \times 26 [/tex]
[/tex]
Odpowiedź:
[tex]\huge\boxed{1\frac{7}{10}\times45-\frac{3}{4}\times26 = 57}[/tex]
Działania na ułamkach
Najpierw wykonujemy mnożenie, a następnie odejmowanie.
[tex]1\frac{7}{10}\times45-\frac{3}{4}\times 26 = \frac{17}{10}\times 45 - \frac{3}{4}\times 26 = \frac{17}{2}\times9-\frac{3}{2}\times 13 = \frac{153}{2}-\frac{39}{2} = \frac{114}{2} = \boxed{57}\\\\lub\\\\1\frac{7}{10}\times45-\frac{3}{4}\times26 = 1,7\times45 - 0,75\times26 = 76,5 - 19,5 = \boxed{57}[/tex]