Question

giúp mình với mình cần gấp lắm giải chi tiết mình cảm ơn nhiều

\(\frac{45\cdot16-17}{45\cdot15+28}\)

Answer 1

\(\frac{45.16-17}{45.15+28}=\frac{45.\left(15+1\right)-17}{45.15+28}=\frac{45.15+45-17}{45.15+28}=\frac{45.15+28}{45.15+28}=1\)

Answer 2

   45 . ( 15 + 1) - 17         45 . 15 + 28

= _______________ = ____________ = 1

   45 . 15 + 28                 45 . 15 + 28 

Answer 3

\(\frac{45.16-17}{45.15+28}=\frac{45.\left(15+1\right)-17}{45.15+28}=\frac{45.15+45.1-17}{45.15+28}\)\(=\frac{45.15+45-17}{45.15+28}=\frac{45.15+28}{45.15+28}=1\)

Answer 4

\(\frac{45.16-17}{45.15+28}\)

\(=\frac{45.\left(15+1\right)-17}{45.15+28}\)

\(=\frac{45.15+45-17}{45.15+28}\)

\(=\frac{45.15+28}{45.15+28}=1\)