yx2+yx4+yx2=120
yx(2+4x2)=120
yx10=120
y=120:10
y=12
tk mk mk tk lại
y x 2 + y x 4 + y x 2 = 120
y x ( 2 + 4 + 2 ) = 120
y x 10 = 120
y = 120 : 10
y = 12
y x 2 + y x 4 + y x 2 = 120
y x ( 2 + 4 + 2 ) = 120
y x 8 = 120
y = 120 : 8
y = 15
tk mk nha
yx2+yx4+yx2=120
yx(2+4x2)=120
yx10=120
y=120:10
y=12
tk mk mk tk lại
y x 2 + y x 4 + y x 2 = 120
y x ( 2 + 4 + 2 ) = 120
y x 10 = 120
y = 120 : 10
y = 12
y x 2 + y x 4 + y x 2 = 120
y x ( 2 + 4 + 2 ) = 120
y x 8 = 120
y = 120 : 8
y = 15
tk mk nha
y x 2 + y x 4 + y x 2 = 120
y x 2 + y x 4 + y x 2 = 120
y x 2 + y x 4 + y x 6 = 120
tìm x,y
a\(\frac{x}{2}=\frac{y}{-5}\)và x-y=35
b2.x=y.4 và x+4=30
Tìm các số nguyên x,y thỏa mãn ;
2 / x - 4 / y = 1/2
y x 2 + y x 8 + y x 5 = 15
Tìm y ???
tim x , y
x + y = 3
x < 2 va y > 2
Câu 1: Tìm x
a, X + 12 = 12 + 6 14 – X = 14 – 2
b, X – 21 = 33 - 21 65 – X = 48 + 17
Câu 2: Tìm x
a, X + 25 = 100 - 25 700 – X = 300 + 200
b, X + 125 = 100 + 125 X – 48 = 65 – 28
Câu 3: Tìm y
a, 45 + y = 67 +17 27 + y = 44 + 18
b, y x 4 = 8 x 2 2 x y = 2 x 9
c, 5 x y = 30 : 3 y x 3 = 24 + 6
Câu 4: Tìm y
a, 123 – y = 456 - 345 y + 345 = 657 + 170
b, y – 112 + 12 = 574 y – 231 = 405 + 15
Câu 5 : Tìm x
a, 170 – X = 46 + 48 65 + 59 + X = 179
b, X – 21 = 33 -21 65 – X = 48 + 17
1/5 + 8/15 : y = 1/2
4/11 x y -6/11 = 2/5