`x+4/5=45/5-36/35`
`x+4/5=279/35`
`x=251/34`
`x+4/5=45/5-36/35`
`x+4/5=279/35`
`x=251/34`
32m2 =..............................................dm2
8dm2 25cm2= ...................................cm2
b, tìm x
x + 4/5 = 7/5 1/7 : x = 3/4
1.tìm x
X x 6/7=5/14 X : 2/3=4/9
X-1/4=3/2 X+4/5=8/9
Bài 1: số ?
1 giờ 32 =...............phút
276 phút = ..............giờ .......phút
9732 kg =...........tấn ............kg
7102 cm =......dm.......cm
bài 2 tìm x
x+3/4=5/6:1/2
bài 3 : tính nhanh
3/5 nhân 7/9 -3/5 nhân 2/9
b1 : rút gọn rồi tính
a, 2/5 + 9/5
b, 15/45 + 25/30
c,28/32 + 45/72
d,8/28 + 5/30
b2 : tìm x
a, x - 4/5 = 4/5 + ( 3/7 + 3/5 )
b, x - 7/35 = 4/5
/ là phần
Tìm x
x - 3/4 = 8/5 x 5/4
bài 1
4/7+4
3+6/11
3-5/7
21/9-2
15/24+2
63/45-20/25
3/4-2/8
6/7-5/8
37/45-5/9
46/39-11/13
5/12+3/4+1/3
1/2+3/7+11/14
7/10-(1/5+1/4)
15/4-2/3-3/4
A X + 4/5= 45/5 -( 3/7 + 3/5)
B. 5/7 + X/35 = 4/5
rút gọn rồi tinhs
45/135,117/234,1515/2727,232323/494949
tìm x
(x-1/3)+1/4=1/2
x-(1/7+2/5)=16/35
x+3/7=2/5+3/10
x + 4/5 = 45/5 - [3/7 + 3/5]