Question

\(\frac{170\cdot144}{12\cdot85\cdot8\cdot4}\)chú ý .là*

Answer 1

\(\frac{170\times144}{12\times85\times8\times4}\)

\(=\frac{85\times2\times12\times3\times4}{12\times85\times2\times4\times4}\)

\(=\frac{3}{4}\)

Đáp số : \(\frac{3}{4}\)

Answer 2

\(\frac{170\cdot144}{12\cdot85\cdot8\cdot4}\)

=\(\frac{85\cdot2\cdot12\cdot4\cdot3}{12\cdot85\cdot2\cdot4\cdot4}\)

=\(\frac{3}{4}\).

Answer 3

170.144/12.85.8.4=

2.85.12.6.2/12.85.8.2.2

6/8=3/4

Answer 4

170x144/12x85x8x4

=85x2x12x3x4/12x85x2x4x4

=3/4

Chú ý / là phần và = 3/4 vì mk lược bớt