Ta có
0,5x=\(\frac{3}{4}x+\frac{3}{4}-\frac{1}{4}\)
0,5x=\(\frac{3}{4}x+\frac{1}{2}\)
0,5x=0,75x+1/2
0,5x= 0,5x+0,25x+1/2
0=0,25x+1/2(bớt cả hai vế cho 0,5x)
0-1/2=0,25x
-1/2=0,25x
-1/2:0,25=x
-2=x
Vậy x bằng 2
0,2:\(1\frac{1}{5}\)=2/3 : [6x +7]
\(3\frac{1}{3}\): 4,8 = 0,5x :7
[31/30-26/25] . -36/35 < x<[51/56 +8/21 + 1/3 ] . 8/3
1/3 +3/35 < x/210 < 4/7 +3/5 + 1/3 tìm x
tìm x :
0,5x - 3/2x = 3\(0,5x-\frac{3}{2}x=\frac{2}{7}\)
tìm x ,biết
a, 0,5x-2/3x=7/12
b, x : 4\(\frac{1}{3}\) = -2,5
c, 5,5x =13/15
d ,{\(\frac{3x}{7}\)+1} : -4 = \(\frac{-1}{28}\)
Tìm x, biết : \(\left[\frac{45\frac{10}{63}-44\frac{25}{84}}{\left(2\frac{1}{3}-1\frac{1}{9}\right):4-\frac{3}{4}}:31\right].x=-\frac{1}{16}\)
Tìm x, biết :
\(\frac{x+3}{97}+\frac{x+5}{95}+\frac{x+4}{96}+\frac{x+1}{99}=-4\)
\(\frac{x-5}{1995}+\frac{x-15}{1985}+\frac{x-25}{1975}=3\)
tìm x:
\(\left|x\right|-5\frac{3}{7}\times\left|x\right|-\frac{3}{4}=2\times\left|x\right|+\frac{-15}{2}\)
\(50\%+\frac{2}{3}x=x+4\)
\(0,5x-\frac{2}{3}\left(x+1\right)=\frac{-1}{12}\)
\(\frac{1}{2}\left(x-\frac{2}{3}\right)-\frac{2}{5}\left(2-x\right)=\frac{1}{9}\)
Tìm x, y biết
\(25\%\cdot y+50\%\cdot y-\frac{3}{4}\cdot y+4\cdot y=10\)
\(x\cdot\frac{1}{4}-\frac{3}{4}=6:\frac{3}{4}\)
GIẢI NHANH GIÚP MÌNH VỚI
TÌM X BIẾT
\(0,5x-75\%x=\left(\frac{1}{3}-1\right)^2\)
TÌM x:
a,(5-x)+12=-25
b,12-4.(x-2)=-4
c,-15-/3-x/=-19
d,\(\left(x+\frac{1}{2}\right).\left(\frac{2}{3}-2.x\right)=-4\)
e,\(\left(x+\frac{1}{5}\right)m\text{ũ}2+\frac{17}{25}=\frac{26}{25}\)\
f,\(\frac{x}{3}+\frac{x}{7}=\frac{1}{7}+\frac{3}{14}\)
