\(5\cdot7\cdot9\cdot\dfrac{39}{35}\cdot13\cdot18\cdot11\)
\(=\left(5\cdot7\cdot9\cdot13\cdot18\cdot11\right)\cdot\dfrac{39}{35}\)
\(=810810\cdot\dfrac{39}{35}=903474\)
\(\dfrac{5x7x9x39}{35x13x18x11}\)
=\(\dfrac{3}{22}\)
( đã rút gọn)
\(\dfrac{5.7.9.39}{35.13.18.11}\) nhu này á bạn hay như này 5x7x9x\(\dfrac{39}{35}\)x13x18x11
\(\dfrac{5.7.9.39}{35.13.18.11}\)
=\(\dfrac{35.9.3.13}{35.13.18.11}\)
=\(\dfrac{27}{198}\)=\(\dfrac{3}{22}\)
