\(x+x.\frac{1}{4}:\frac{2}{7}+x:\frac{2}{9}=255\)
\(\Leftrightarrow x+x\frac{1}{4}.\frac{7}{2}+x.\frac{9}{2}=255\)
\(\Leftrightarrow x\left(1+\frac{1}{4}.\frac{7}{2}+\frac{9}{2}\right)=255\)
\(\Leftrightarrow x.\frac{51}{8}=255\)
\(\Leftrightarrow x=40\)
X + X x 1/4 : 2/7 + x : 2/9 = 255
X+X x 1/4 : 2/7 + X : 2/9 =255
X + X x 1/4 : 2/7 + x : 2/9 = 255
x+x*1/4:2/7+x:2/9=255
tính nhanh
X + X * 1/4 : 2/7 + X : 2/9 = 255
X + X x 1/4 : 2/7 + X : 2/9 = 255
hộ mình với nhanh có tick
x+x*1/4:2/7+x:2/9=255
3/2 X 4/5 - x = 2/3
X + X x 7/8 + X x 9/2 = 255
tim x nha mn
l,[12 nhan 15 - x] nhan 1/4= 120 nhan 1/4
i, [x nhan 0,25 cong 2012 ] nhan 2013 =[50 cong 2012] nhan 2013
k,[ x - 1/2] nhan 5/3 = 7/4 - 1/2
