X-Y=2.25
X-Yx3=Yx3+4.25
X=
Y=
Giải hẳn ra rồi mình tik
Cho x+y =1 và xy khác 0. Chứng minh rằng xy3−1−yx3−1+2(x−y)x2y2+3=0xy3−1−yx3−1+2(x−y)x2y2+3=0.
x-712=23; yx3+y=100-88
x+y=?
Tìm y: 7xy+y-yx3+5xy=7800
Yx(7+1-3+5)=7800
Yx10=7800
Y=7800:10
Y=780
yx5+y:0,25=81
yx3+y:0,2=64
\(y\text{×}5+y:0,25=81\)
\(y\text{×}5+y\text{×}4=81\)
\(y\text{×}\left(5+4\right)=81\)
\(y\text{×}9=81\)
\(y=81:9\)
\(y=9\)
\(y\text{×}3+y:0,2=64\)
\(y\text{×}3+y\text{×}5=64\)
\(y\text{×}\left(3+5\right)=64\)
\(y\text{×}8=64\)
\(y=64:8\)
\(y=8\)
118,24 -{yx3+y:5}=54,24
\(118,24-\left(y\cdot3+y:5\right)=54,24\)
=>\(\left(y\cdot3+y\cdot0,2\right)=118,24-54,24\)
=>\(y\cdot3,2=64\)
=>\(y=\dfrac{64}{3,2}=20\)
Tìm y :
yx3+y:2= 110
y x 3 + y : 2 = 110
y x 3 + y x 0,5 = 110
y x ( 3 + 0,5 ) = 110
y x 3,5 = 110
y = 110 : 3,5
y = ??????????
Bài 4 tìm y
Yx3=246-12
Y:3+5=215
yx3=246-12
yx3=234
y=234:3
y=78
y:3+5=215
y:3=215-5
y:3=210
y=210x3
y=630
y x 3= 246 - 12
3y= 246 -12
3y= 234 = 78
y= 78
+) \(Y\times3=246-12\)
\(Y\times3=234\)
\(Y=78\)
+) \(Y:3+5=215\)
\(Y:3=210\)
\(Y=630\)
tìm y
yx27+yx61 + yx11+y=125x80
yx3+yx7=1530
yx13-4xy=918
giúp mình với
Tìm y: (372+300):(Yx3)=8
672/(y*3)=8
=>y*3=672/8
=>y*3=84
=>y=84/3=28