Question

[Huy]

Rút gọn phân số sau

a)\(\frac{13.2-13.3}{1-27}\)

b)\(\frac{15.\left(-3\right)+23.15}{-5+20}\)

Answer 1

[Phạm Hoàng Nguyên]

a, \(\frac{13.2-13.3}{1-27}\)=\(\frac{13.\left(2-3\right)}{-26}\)=\(\frac{13.\left(-1\right)}{-26}\)=\(\frac{-13}{-26}\)=\(\frac{1}{2}\)

b,\(\frac{15.\left(-3\right)+23.15}{-5+20}\)=\(\frac{15.[\left(-3\right)+23]}{15}\)=\(\frac{15.20}{15}\)=\(\frac{300}{15}\)=20

Answer 2

[Phạm Hoàng Nguyên]

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