Thực hiện các phép tính sau:
a) \(\left( { - 5} \right) + \left( { - 10} \right) + 8\)
b) \(\left\{ {189 - \left[ {34 + \left( {20 - 5} \right)} \right]} \right\}:20\)
c) \({2^3}{.5^2} - {3^{15}}:{3^{14}} + {2019^0}.1823\)
A.\(\begin{array}{l}{\rm{a)}}\,\, - 8\\{\rm{b)}}\,\,8\\{\rm{c)}}\,{\rm{ 2019}}\end{array}\)
B.\(\begin{array}{l}{\rm{a)}}\,\, - 7\\{\rm{b)}}\,\,7\\{\rm{c)}}\,{\rm{ 2020}}\end{array}\)
C.\(\begin{array}{l}{\rm{a)}}\,\, - 8\\{\rm{b)}}\,\,7\\{\rm{c)}}\,{\rm{ 2021}}\end{array}\)
D.\(\begin{array}{l}{\rm{a)}}\,\, - 7\\{\rm{b)}}\,\,8\\{\rm{c)}}\,{\rm{ 2018}}\end{array}\)
a) \(\left( { - 5} \right) + \left( { - 10} \right) + 8\)
b) \(\left\{ {189 - \left[ {34 + \left( {20 - 5} \right)} \right]} \right\}:20\)
c) \({2^3}{.5^2} - {3^{15}}:{3^{14}} + {2019^0}.1823\)
A.\(\begin{array}{l}{\rm{a)}}\,\, - 8\\{\rm{b)}}\,\,8\\{\rm{c)}}\,{\rm{ 2019}}\end{array}\)
B.\(\begin{array}{l}{\rm{a)}}\,\, - 7\\{\rm{b)}}\,\,7\\{\rm{c)}}\,{\rm{ 2020}}\end{array}\)
C.\(\begin{array}{l}{\rm{a)}}\,\, - 8\\{\rm{b)}}\,\,7\\{\rm{c)}}\,{\rm{ 2021}}\end{array}\)
D.\(\begin{array}{l}{\rm{a)}}\,\, - 7\\{\rm{b)}}\,\,8\\{\rm{c)}}\,{\rm{ 2018}}\end{array}\)
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