4800:X+130/4+225=7,3x50\(\Rightarrow\)4800:x+130/4=110\(\Rightarrow\)x=4800:(110-130/4)\(\Rightarrow\)x=1920/31
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a) 4800:X+130/4 + 255= 7.3 x 50
b) X/27=3/X
4800:X+130/4+255=7,3x50
a) ( 1 + 1/2) x ( 1 + 1/3) x ( 1 + 1/4) x ……. X ( 1 + 1/2000 )
b) 101 x 34 + 10,1 x 130 – 1,01 x 2700
c) 12/50 + 8% + 59/100 + 9%
Tính nhanh
a) ( 1 + 1/2) x ( 1 + 1/3) x ( 1 + 1/4) x ……. X ( 1 + 1/2000)
b) 101 x 34 + 10,1 x 130 – 1,01 x 2700
c) 12/50 + 8% + 59/100 + 9%
Tìm x, biết :
a) ( 3/4 + 3/28 + 3/70 + 3/130 ) * x = 36
b) x * 57 + x * 50 - x * 7 = 10 000
4800 x 3 phần 4 = ?
Tìm x: x + x -1 +x - 2+ x- 3 + x- 4 + ....+x - 50 = 255
4800:\(\frac{X+130_{ }}{4}\)+225=375
1im cac so tu nhien x,y biet:
1. 252/x=84/97
2.x-2/255=114/153
3.50/19 nhan38/25<x<69/17+33/17
4.7/15<x/40<8/15
5.(1 1/4 -3/5):17/20<x/17<(5 1/3-3 1/2):12/17
6.y/15=2/5
7.3/x-7=27/135
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