\(@Ans\)
\(\downarrow\)
\(\text{a) 98 - 25,37 - 44,36}\)
\(=98+\left(-25,37\right)+\left(-44,36\right)\)
\(=98+\left[\left(-25,37\right)+\left(-44,36\right)\right]\)
\(=98+(-69,73)\)
\(=28,27\)
\(b)14.32.2+7.25.4+28.33\)
\(=\left(14.2\right).32+\left(7.4\right).25+28.33\)
\(=28.32+28.25+28.33\)
\(=28.\left(32+25+33\right)\)
\(=28.90\)
\(=2520\)
\(c)30.137.2+10.43.6-15.80.4\)
\(=\left(30.2\right).137+\left(10.6\right).43-\left(15.4\right).80\)
\(=60.137+60.43-60.80\)
\(=60.\left(137+43-80\right)\)
\(=60.100\)
\(=6000\)
\(d)126.15-26.14\)
\(=1890-364\)
\(=1526\)
\(\text{( Dấu "." là dấu nhân nhé )}\)
\(\text{Chúc bạn học tốt!!}\)
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b) 
d) 
