\(3\times\dfrac{3}{5}+\dfrac{4}{3}=\dfrac{9}{5}+\dfrac{4}{3}=\dfrac{27}{15}+\dfrac{20}{15}=\dfrac{27-20}{15}=\dfrac{47}{15}\)
\(3\times\dfrac{3}{5}+\dfrac{4}{3}=\dfrac{9}{5}+\dfrac{4}{3}=\dfrac{27}{15}+\dfrac{20}{15}=\dfrac{27-20}{15}=\dfrac{47}{15}\)
bài 3: tính rồi rút gọn: a, 5/3x4/5. b, 2/3x3/5. c, 7/6x6/5. d, 8/5x5/7. e, 7/6x6/7. g, 9/5x6/2. h, 4/3x3/5
các bn giúp mik với
Tính
1/3x3/5:9/5
15/16:3/8x3/4
Bài 10:
a) 1/3x3/4+5/4x1/3=
b) Tìm một số tự nhiên biết 3/5 số đó bằng 60
2/3+3/3+4/3x3/4=?
X+5/12=4/3x3/5
X x2/5=7/11:9/11
Tính: A) 7/4:11/9+5/4:11/9, B) 28/5:4/5x5/8, C) 2/3x3/6+4/5:5/6-2/5
1,tính:
a,1/2x2/3x3/4= b,7/8x8/9x9/10=
c,5/14x7/15x28/7= d,2x1/2x3x1/3x4x1/4x5x1/5=
2,tính:
a,7/20-(5/8-3/5)= b,5/6+(5/9-1/4)=
c,9/10-(2/5+3/10)+7/20=
3,tìm x:
a,1/2+x=5/6 b,5/6-x=1/3 c,x-1/=3/10 d,1/3x x=1/6
Bài 5 Tính nhanh giá trị của biểu thức a, 2/3x3/4x5/6x4/5 b,4/5-2/3+1/5+1/3 c,2/5x7/4-2/5x3//7 d,13/4x2/3x4/13x3/2 e,3/5x79-3/5x2/9 g,5/9x1/4+4/9x3/12 huhuhu......
A . 2/5x3/7 4/9x3/10 4/7x3/4 2x5/8
B . 3/8:7/5 3/4:9/10 7/8:2 6:2/3
C . 1/3x3/5x5/9 15/16:3/8x3/4