\(3\frac{2}{5}\times2\frac{1}{7}\)
\(=\frac{17}{5}\times\frac{15}{7}\)
\(=\frac{17\times15}{5\times7}\)
\(=\frac{17\times3\times5}{5\times7}\)
\(=\frac{17\times3}{7}\)
\(=\frac{51}{7}\)
A) 2/5:6/5+3/4x12/5
B)17/5x3/5x17/5x2/5
C) 1/4+3/4x2/3-1/2
D) 6/7+5/8:5
2 2/5x25/18
9/11:2 2/5x2 3/4
10:35/24:36/7
13/5x2/3+7/3x2/3
21X-5x2+3-7=7xX
21X-5x2+3-7=7xX
3/4+2/3+5/12, 7/8-7/16-11/32, 3/5x2/7x5/6, 15/16:3/8:3/4. Giúp mình nha, ai có đáp án sớm nhất mình hứa tích cho các bạn luôn!!!!!! Nhưng giúp mình đi mà
2+2x2+2+2x2x2+5x5-5x2+3-2
1+1+1x2+2:4+5x2+10=
1x 4 + 2 x6 + 3x8+4x 10 + 5x12/ 5x2+10 x 3 + 15 x4+ 20 x5+ 25 x6
