25%x+x=1,25
25%.x+ x=-1,25
25% x + x= -1,25
<=>125%x= -1,25
<=>x= -1
$25%x+x=-1,25\\\to 1,25x=-1,25\\\to x=-1$
Vậy x=-1
$25\%x+x=-1,25\\\to 1,25x=-1,25\\\to x=-1$
Vậy x=-1
Giúp mình với tìm x biết
,6*x+7,19*x bằng 3,558
Tính nhanh
0,8*0,4*1,25*25+0,725+0,25/1,25*4*8*25
6*x+7.19*x=3.558
(6+7.19)*x=3.558
13.19*x=3.558
x=3.558/13.19
=0.2697498105
tính nhanh
0,8 x 0,4 x 1,25 x 25 + 0,725 + \(\frac{0,25}{2,25\times4\times8\times25}\)
= (0,8 x 0,4) x (1,25 x 25) + 0,725 + \(\frac{0,25}{2,25\times4\times8}\)
= 0,32 x 31,25 + 0,725 + \(\frac{0,25}{2,25\times4\times8}\)
= 10 + 0,725 + \(\frac{0,25}{2,25\times4\times8}\)
= 10 + 18,725
= 28,725
Hk tốt,
k nhé
Tìm x biết: 25%.x + x = - 1,25
tính nhanh :
4/5 x 1/20% + 0,08 = .... ( số thập phân )
2001 : 25 - 1999 : 25 = ......
75 x 1,25 = ...
56 x 2,5 x 400 =
1600 : 1,25 =
\(\frac{4}{5}x\frac{1}{20\%}+0,08=4,08\)
\(2001:25-1999:25=0,08\)
\(75x1,25=93,75\)
\(56x2,5x400=56000\)
\(1600:1,25=1280\)
\(k\)\(nha♥♥♥♥\)
4/5 x 1/20% + 0,08 = 4 + 0,08
= 4,08
2001 : 25 - 1999 : 25 = 80,04 - 79,96
= 0,08
75 x 1,25 = 93,75
56 x 2,5 x 400 = 56 x 1000
= 56 000
1600 : 1,25 = 1280
xong rồi đó
25% x X + X + X x 1,25 =12,5
25% nhân X+X+X nhân 1,25 =12,5
25%nhân X+X+X =12.5 chia 1,25
25% nhân X nhân 3 =10
X nhân 3 =10 chia 25%
X nhân 3 =40
X =40 chia 3
X =13,3333.....................
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-25% X-X=1,25
\(-25\%x-x=1.25\)
\(-\frac{1}{4}x-x=\frac{5}{4}\)
\(\left(-\frac{1}{4}-1\right)\cdot x=\frac{5}{4}\)
\(-\frac{5}{4}\cdot x=\frac{5}{4}\)
\(x=-\frac{5}{4}:\frac{5}{4}\)
\(x=-1\)
x+25%x=-1,25
0,29 x 8 x 1,25
0,04 x 0,1 x 25
0,29 x ( 8 x 1,25 )
= 0,29 x 10
= 2,9
0,04 x 0,1 x 25
= ( 0,04 x 25 ) x 0,1
= 1 x 0,1
= 0,1.
`@` `\text {Ans}`
`\downarrow`
`0,29 \times 8 \times 1,25`
`= 0,29 \times (8 \times 1,25)`
`= 0,29 \times 10`
`= 2,9`
_____
`0,04 \times 0,1 \times 25`
`= (0,04 \times 25) \times 0,1`
`= 1 \times 0,1`
`= 0,1`
0,29*(8*1,25)
=0,29*10
=2,9
______________
0,01* (0,04*25)
=0,01*1
=0,01