a. \(495:\left(3\times5\times11\right)\)
\(=\left(3\times3\times5\times11\right):\left(3\times5\times11\right)\)
\(=3\times3\times5\times11:3:5:11\)
\(=\left(3:3\right)\times\left(5:5\right)\times\left(11:11\right)\times3\)
\(=1\times1\times1\times3=3\)
b. \(\left(15\times18\times24\right):\left(5\times9\times12\right)\)
\(=15\times18\times24:5:9:12\)
\(=\left(15:5\right)\times\left(18:9\right)\times\left(24:12\right)\)
\(=3\times2\times2\)
\(=12\)
c. \(\left(27+45+18+81\right):9\)
\(=\left(27:9\right)+\left(45:9\right)+\left(18:9\right)+\left(81:9\right)\)
\(=3+5+2+9\)
\(=19\)
a 495 : (3 x 5 x 11)
=495 : 165
= 3
b (15 x 18 x 24) : (5 x 9 x 12)
= (270 x 24) : (45 x 12)
= 6480 : 540
12
c (27 + 45 + 18 + 81) : 9
=171 : 9
=19
