=>2/35<x<8/3
hay \(x\in\left\{1;2\right\}\)
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=>2/35<x<8/3
hay \(x\in\left\{1;2\right\}\)
1.tính bằng hai cách
(2/3-4/5)x25 3/4x2/503/4x2/7
2.tìm x
x:2/5=2/3 x:2/3=4/9
X/5x1/3=2/15 nhanh giùm nha!
bài 1 tính nhanh
a 6/5x1/7+3/5x6/7 = ?
b 6/7x 3 2/7 x3
tính bằng hai cách
4/7:4/3+5:4/3 3/4x2/5-3/4x2/7
(2/3-4/7)x2/5
2/5x5+4x2/5+2/5 (1-1/2)x(1-3/5)x(1-2/7)x(1-2/9)
2/5x5+4x2/5+2/5 (1-1/2)x(1-3/5)x(1-2/7)x(1-2/9)
Tính bằng 2 cách:
a,2/5x3/7+2/5x4/7
b,(2/3-4/7)x5/5
c,3/4x2/5-3/4x2/7
1/5x19/16-1/5x3/15-1/5x1/15 =
Tính nhanh 7/9x3/5+3/5x5/6+3/5x1