\(47\times\left(53-37\right)-53\times\left(47-37\right)\)
\(=47\times53-47\times37-53\times47+53\times37\)
\(=\left(47\times53-53\times47\right)+\left(53\times37-47\times37\right)\)
\(=0+\left(53-47\right)\times36=6\times36\)
\(=216\)
\(2019.2016-1009-1000-2019.2015\)
\(=\left(2019.2016-2019.2015\right)-1009-1000\)
\(=2019-1009-1000\)
\(=1010-1000\)
\(=10\)
\(47.\left(53-37\right)-53.\left(47-37\right)\)
\(=47.53-47.37-53.47+53.37\)
\(=\left(47.53-53.47\right)-47.37+53.37\)
\(=0-37.\left(47-53\right)\)
\(=0-37.\left(-6\right)\)
\(=0-\left(-222\right)\)
\(=222\)
\(2016.83+1008.34\)
\(=167328+34272\)
\(=201600\)
\(\left(37.13-13\right):\left(24+37.12\right)\)
\(=\frac{37.13-13}{24+37.12}\)
\(=\frac{13.\left(37-1\right)}{12.2+37.12}\)
\(=\frac{13.36}{12.\left(2+37\right)}\)
\(=\frac{13.36}{12.39}\)
\(=\frac{13.12.3}{12.13.3}\)
\(=\frac{13.12.3}{13.12.3}\)
\(=1\)
~ Rất vui vì giúp đc bn ~
Lầm sau đăng từng cái 1 ik, như thế sẽ dễ hơn, thế này nhìn rắc rối lắm !!! ^_<
