Tìm y biết: 4/7 - y x 2 = 2/7
Tìm y, biết
y x 2/5 = 4/7 : 3/2
12/7 : y + 2/5 = 7/5 2 câu
1.Tìm y, biết: a) y × 2/5 + y × 3/5 = 5/7 b) y × 7/2 - y × 3/2 = 3/4
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!!!
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
y - 7/10 = 4/5 : 2 y x 4/9 = 3/8 x 4
4/7 : y = 2/7
2/7 x y - 1/4 x y = 3/7
giúp tui với! Help meeeeeeeeeeeeeeeeee!
tim y
a y x 3/4 + 2/5 b y : 2/3 - 2 / 5 = 7/8
Tìm Y
Y : 1/5 = 7
5/4 - Y=2/3