Toán Lớp 6: 2 tính nhanh nếu đc
f ( -34 ) -(-91) + (-26) + ( -199)
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Toán Lớp 6: 2 tính nhanh nếu đc
f ( -34 ) -(-91) + (-26) + ( -199)
Comments ( 2 )
\left( {{\rm{ }} – 34{\rm{ }}} \right){\rm{ }} – \left( { – 91} \right){\rm{ }} + {\rm{ }}\left( { – 26} \right){\rm{ }} + {\rm{ }}\left( {{\rm{ }} – 199} \right)\\
= – 34 + 91 – 26 – 199\\
= \left( { – 34 – 26} \right) + \left( {91 – 199} \right)\\
= – 60 + \left( { – 108} \right)\\
= – 168
\end{array}\]