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\(1\frac{1}{4}-6,75+6,25+12\times27-1,25+135\times\frac{1}{3}\)
\(=\frac{5}{4}-6,75+6,25+12\times27-1,25+135\times\frac{1}{3}\)
\(=1,25-6,75+6,25-1,25+324+45\)
\(=-5,5+5+324+45\)
\(=-0,5+324+45\)
\(=\left(-0,5+45\right)+324\)
\(=44,5+324\)
\(=368,5\)
4,5 ngày*3+4 ngày 12 giờ *6+108 giờ*2-4+1/2 ngày
\(=4,5ngày\cdot3+4,5ngày\cdot6+4,5ngày\cdot2-4,5ngày\)
\(=4,5ngày\cdot\left(3+6+2-1\right)\)
\(=4,5ngày\cdot10=45\left(ngày\right)\)
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\(\dfrac{3}{8}-\left(\dfrac{1}{3}-\dfrac{1}{4}\right)\)
\(=\dfrac{3}{8}-\dfrac{1}{3}+\dfrac{1}{4}\)
\(=\left(\dfrac{3}{8}+\dfrac{1}{4}\right)-\dfrac{1}{3}\)
\(=\left(\dfrac{3}{8}+\dfrac{2}{8}\right)-\dfrac{1}{3}\)
\(=\dfrac{5}{8}-\dfrac{1}{3}\)
\(=\dfrac{15}{24}-\dfrac{8}{24}\)
\(=\dfrac{7}{24}\)
\(=A.0\)
\(=0\)