\(3^3.5^3-20.\left\{300-\left[546-2^3.\left(7^8:7^6+7^0\right)\right]\right\}\)
= \(27.125-20.\left\{300-\left[546-8.50\right]\right\}\)
= \(3375-20.\left\{300-\left[546-400\right]\right\}\)
= \(3375-20.\left\{300-146\right\}\)
= \(3375-20.154=3375-3080=295\)
Đáp án hoàn toàn chính xác đấy.
Chúc bạn học tốt :))
33.53-20.{ 300-[ 546-23.(78:76+70)]}
=-98-20.{300- [546-8.50]}
=-98-20.{300-[546-400]}
=-98-20.{300-146}
=-98-20.154
=-3178
Chúc bạn học tốt 
Khanh Nhí
\(=\)\(3^3.5^3-20.\left\{300-\left[546-2^3.\left(7^8:7^6+7^0\right)\right]\right\}\)
\(=\)\(27.125-20.\left\{300-\left[546-2^3.\left(49+1\right)\right]\right\}\)
\(=\)\(3375-20.\left\{300-\left[546-8.50\right]\right\}\)
\(=3375-20\left(300-146\right)\)
\(=3375-20.154\)
\(=3375-3080\)
\(=295\)
\(3^3.5^3-20.\left\{300-[546-2^3.\left(7^8:7^6+7^0\right)]\right\}\)
\(=\left(3.5\right)^3-20.\left\{300-[546-8.\left(7^2+1\right)]\right\}\)
\(=3375-20.\left\{300-[546-8.\left(49+1\right)]\right\}\)
\(=3375-20.\left\{300-[546-8.50]\right\}\)
\(=3375-20.\left\{300-[546-400]\right\}\)
\(=3375-20.\left(300-146\right)\)
\(=3375-20.154\)
=3375-3080=295