Evaluate:
−145×−67\dfrac{-14}{5} \times \dfrac{-6}{7}5−14×7−6
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−145×−67=−14×(−6)5×7=8435=125=225\dfrac{-14}{5} \times \dfrac{-6}{7}\\[1em] =\dfrac{-14 \times (-6)}{5 \times 7}\\[1em] =\dfrac{84}{35}\\[1em] =\dfrac{12}{5}\\[1em] =2\dfrac{2}{5}5−14×7−6=5×7−14×(−6)=3584=512=252
Hence, −145×−67=225\dfrac{-14}{5} \times \dfrac{-6}{7} = 2\dfrac{2}{5}5−14×7−6=252
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