Question

срочно!!!
$\frac{ {3}^{8} \times {7}^{8} }{ {21}^{7} }$

Answer 1

$\frac{ {3}^{8} \times {7}^{8} }{ {21}^{7} } = \frac{ {3}^{8} \times {7}^{8} }{ {3}^{7} \times {7}^{7} } = \frac{3 \times {7}^{8} }{1 \times {7}^{7} } = 3 \times {7}^{8 - 7} = 3 \times {7}^{1} = 3 \times 7 = 21$

Answer 2

$\frac{3^{8}*7^{8}} {21^{7}}= \frac{(3*7)^{8}} {21^{7}}= \frac{21^{8}} {21^{7}}= 21^{8-7}=21^{1}=21$