Question

Tính nhanh:

\(\frac{64x50+44x100}{27x38+146x19}\)

Answer 1

\(\frac{369}{656}\)

Answer 2

\(\frac{64\times50+44\times100}{27\times38+146\times19}\)

\(=\frac{32\times2\times50+44\times100}{27\times38+73\times2\times19}\)

\(=\frac{32\times100+44\times100}{27\times38+73\times38}\)

\(=\frac{\left(32+44\right)\times100}{\left(27+73\right)\times38}\)

\(=\frac{76\times100}{100\times38}\)

\(=\frac{38\times2\times100}{100\times38}\)

\(=2\)

đó là cách thuận tiện nhất