( 4 . 315 + 5 . 315 ) : 316
= 315.( 4 + 5) : 316
= 315.32:316
= 31=3
\(=\left[3^{15}\left(4+5\right)\right]:3^{16}=\left(3^{15}.3^2\right):3^{16}=3^{17}:3^{16}=3\)
\(=\frac{3^{15}\cdot\left(4+5\right)}{3^{16}}=3\)
(4.315+5.315):316=[315.(4+5)]:316
=[315.9]:316
=[315.32 ]:316
=317:316
=3
\(\frac{3^{15}\cdot\left(4+5\right)}{3^{16}}=3\)
Đáp án bằng 3 bạn nhé bài này mik làm suốt chắc chắn 100%