x^2=1 vay x bang bao nhieu
x - 5 / 12 = 2 / 3 - 1 / 4 bang bao nhieu vay cac ban
X - \(\frac{5}{12}\) = \(\frac{2}{3}\) - \(\frac{1}{4}\)
X - \(\frac{5}{12}\) = \(\frac{5}{12}\)
X = \(\frac{5}{12}\) + \(\frac{5}{12}\)
X = \(\frac{10}{12}\) = \(\frac{5}{6}\) TK MÌNH NHÉ BẠN
ban phai lam day du thi to moi biet duoc chu
100444 x 1/23 = bang bao nhieu vay ho minh voi
40:x=50 vay x bang bao nhieu
40:x=50
x = 40 : 50
x = 0 , 8 ( nên nhớ lớp 2 chưa học số thập phân )
2:x=1
x=2 vay -2:x=-1 hoi x bang bao nhieu
ai tra loi nhanh ngangon nhat minh se tick cho nguoi do hi hi
2x+25%x=-2,25
vay x bang bao nhieu
\(2x+25\%x=-2,25\)
\(\Leftrightarrow2x+\frac{25}{100}x=-\frac{225}{100}\)
\(\Leftrightarrow2x+\frac{1}{4}x=-\frac{9}{4}\)
\(\Leftrightarrow x\left(2+\frac{1}{4}\right)=-\frac{9}{4}\)
\(\Leftrightarrow\frac{9}{4}x=-\frac{9}{4}\)
\(\Leftrightarrow x=-\frac{9}{4}\div\frac{9}{4}\)
\(\Leftrightarrow x=-1\)
\(2x+25\%x=-2,25\)
\(2x+0,25x=-2,25\)
\(x.\left(2+0,25\right)=-2,25\)
\(x.2,25=-2,25\)
\(x=-2,25:2,25\)
\(x=-1\)
~Học tốt~
X+2x=234 bang bao nhieu vay may ban
(x+y)-(x-y)
bang bao nhieu vay cac ban giup to voi
(x+y)-(x-y)
=x+y-x+y=y+y=2y (phá ngoặc)
vậy (x+y)-(x-y)=2y
2x =-24
5. 10
Vay x bang bao nhieu
neu 1/2 cua a bang 2b thi 9/8a=kb . Vay k bang bao nhieu ?
ta có:a/2=2b =>a=4b
=> (9/8).a=9/8. 4b=36/8 .b =kb
=>k=36/8.b:b=36/8=9/2=4,5