y= \(\dfrac{1}{2}.\dfrac{2}{5}=\dfrac{1}{5}\)
\(y:\dfrac{2}{5}=\dfrac{1}{2}\)
\(y=\dfrac{1}{2}\times\dfrac{2}{5}\)
\(y=\dfrac{1}{5}\)
bài 1: Tính
a} 5/12 + 1/3 x 3/5 =
B 7/5 - 4/9 : 2/5 =
C 2/5 x 1/4 : 2/5 =
bài 2: Tìm y
a 42/25 : y/5 = 5/6
b 27/y : 9/4 = 3/7
1.Tìm y, biết: a) y × 2/5 + y × 3/5 = 5/7 b) y × 7/2 - y × 3/2 = 3/4
5 x y = 1/2 + 2/3 8/5 - y = 1/3
Y+2/5=17/12-5/6 là: y. Y-1/3=7/15+2/5
tìm y
3/5 x y + 1/2 : 5/3 - 5/4 = 1/2 x 1/3
Tìm y
a) y x 6/7 = 5/14
b) y : 2/3 = 4/9
c) 3/10 + y = 1/2
d) 5/6 - y = 1/3
TÌM Y
1/5 + 8/15 : y = 1/2
4/11 x y - 6/11 = 2/5
LƯU Ý : 1/5 = 1 phần 5 tương tự các câu khác
Tìm y :
a. 3,7 * y + 5,28 = 14,9
b. 1/2 :y +2/3 = 5/2
c. 42/25 : y/5 = 6/5
d. 11/14 - 3/y = 5/14
Tìm y. Y×1/2+y×2/3+y=11/5
1.tìm y.giải ra
a) y + 3/7 x 21/9 = 5
b) y x 3/5 - 1/2 = 4/5
c)9/8 - y + 2/5 = 1/4
d) y - 6/5 : 2/3 = 5/6
e) y : 7/8 + 3/4 = 7/4
giúp mk,mai đi hok thêm mk nộp!!!
