Ta có: \(7\frac{5}{9}-\left(2\frac{3}{4}+3\frac{5}{9}\right)\)
\(=7\frac{5}{9}-2\frac{3}{4}-3\frac{5}{9}\)
= \(\left(7\frac{5}{9}-3\frac{5}{9}\right)-2\frac{3}{4}\)
\(=4-2\frac{3}{4}=\frac{16}{4}-\frac{11}{4}=\frac{5}{4}\)
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Ta có: 759−(234+359)759−(234+359)
=759−234−359=759−234−359
= (759−359)−234(759−359)−234
=4−234=164−114=54
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