x - 1/4 = 1/2
x = 1/2 + 1/4
x = 2/4 + 1/4
x = 3/4
k mk nha
\(x-\frac{1}{4}=\frac{1}{2}\)
\(x=\frac{1}{2}+\frac{1}{4}\)
\(x=\frac{3}{4}\)
x - 1/4 = 1/2
x = 1/2 + 1/4
x = 2/4 + 1/4
x = 3/4
k mk nha
\(x-\frac{1}{4}=\frac{1}{2}\)
\(x=\frac{1}{2}+\frac{1}{4}\)
\(x=\frac{3}{4}\)
a) 1/2 x 1/4 + 1/2 x 3/4
b) 4/5 x 1/2 - 1/2 x 1/4
2.tính
1/2 x 1/3 x 1/4
1/2 x 1/3 : 1/4
1/2 : 1/3 x 1/4
1/2 : 1/3 x 1/4
1) 1/3 x 1/2 x 3/7 2) 5/4 x 1/3 + 1/7 3) 8 x ( 8/9-2/3 ) 4) 5/6 x 48/20 x 1/2 5) ( 2/5 + 3/4 ) x 8 6) 10 x ( 1/2-1/5 )
1/2 x 1/3 x 1/4
1/2 x 1/3 : 1/4
1/2 : 1/3 x 1/4
1/2 : 1/3 : 1/4
các bạn ơi giúp mình giải câu này với ai làm đúng cho 1 like nha
Bài 2:
a) ( 1/4 :5 x 1/3 x 1/4 ) : ( 2/3 + 1/5 :4 )
b) ( 3/4 :5 + 1/2:3/5 ) x ( 4/5 + 1/3 x2 )
Bài 1 : tính giá trị của biểu thức
1/2 x 3/4 : 4/5
2/3 + 1/6 - 1/2
3/5 + 4 : 2/3 - 3/2
2 tìm x
x - 1/4 = 1/2
2/3 + x = 1
2/9 nhân x 6/15 : 4/5
3/5 :x = 1/7
Bài 299: Tính
1) 1/3 x 1/2 x 3/7
2) 5/4 x 1/3 + 1/7
3) 8 x ( 8/9-2/3 )
4) 5/6 x 48/20 x 1/2
5) ( 2/5 + 3/4 + x 8
6) 10 x ( 1/2 - 1/5 )
Trình bày rõ cách làm giúp ạ!!
a) (1 - 1/2) x (1 - 1/3) x (1 - 1/4) x (1 - 1/5) x (1 - 1/6)
b) (1 - 1/2) x (1 - 1/4)x...x (1 - 1/2019) x (1 - 1/2020)
( 1 -1/2 ) x ( 1-1/3) x ( 1-1/4 )
b ) ( 1 + 1/2 ) : ( 1+1/3 ) : ( 1+ 1/4 )
tính
6/5 - 4/5 x 4/8 + 1
TIM SO TU NHIEN
X < 3/4 + 4/5
X = ......
1/2 + 2/3 < X < 4 - 5/4
Ai nhanh to k
Tính nhanh:
a) 1/2 + 1/4 + 1/8 +..........+ 1/256
b) 1/1 x 2 + 1/2 x 3 + 1/3 x 4 +...............+ 1/ 13 x 14
c) 3/15 x 18 + 3/18 x 21 + 3/21 x 24 +..........+ 3/87 x 90