x+\(\frac{3}{20}\)=\(\frac{5}{4}\)
x=\(\frac{5}{4}\)-\(\frac{3}{20}\)
x=\(\frac{25}{20}-\frac{3}{20}\)
x=\(\frac{22}{20}\)
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Tính (theo mẫu):
Mẫu: 5 x (10 – 4)
Cách 1:
5 x (10 – 4) = 5 x 6 = 30
Cách 2:
5 x (10 – 4) = 5 x 10 – 5 x 4 = 50 – 20 = 30
a) 3 x (20 – 5)
b) 20 x (40 – 1)
1. tìm x
a)1/2+X=5/6 b)X+1/4=3/4
c) 3/10 +X=1/2 d) X+1/4=3/8
2. tính giá trị biểu thức
7/20 -(5/8-2/5) 9/10 - (2/5+3/10)+7/20
Tính rõ ràng
1/20 + 3/5 =....
4/5 x 20/9 =...
4/5 - 5/8 =...
1/2 : 5/8
Tìm x
x - 4/5 = 3/7
x + 3/7 = 4/5
19/20 - x = 8/5 - 3/4
4/5 x X = 6/9 - 4/7
x : 7/9 = 6/8
2/3 - x/6 = 6/18
Tìm x
x - 4/5 = 3/7
x + 3/7 = 4/5
19/20 - x = 8/5 - 3/4
4/5 x X = 6/9 - 4/7
x : 7/9 = 6/8
2/3 - x/6 = 6/18
TÌM X 3/4+X/20=4/5
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 )
a) 7 + 3/4 - 5/6 = ?
b) 8 x 4/5 : 6/7 = ?
c) 1/2 + 2/3 + 3/4 = ?
d) 4/5 + 5/4 + 7/20 = ?
dfrac{2}{5} x dfrac{3}{4}-dfrac{1}{8}
dfrac{4}{3}+dfrac{1}{3}-dfrac{1}{5}dfrac{9}{20}-dfrac{3}{5} x dfrac{1}{4}
dfrac{2}{8}+dfrac{2}{3}:dfrac{4}{5}
Đọc tiếp
\(\dfrac{2}{5}\) x \(\dfrac{3}{4}-\dfrac{1}{8}\) \(= \)
\(\dfrac{4}{3}+\dfrac{1}{3}-\dfrac{1}{5}=\)
\(\dfrac{9}{20}-\dfrac{3}{5}\) x \(\dfrac{1}{4}\)\(= \)
\(\dfrac{2}{8}+\dfrac{2}{3}:\dfrac{4}{5}\)\(=\)
tìm x biết:
a. 12+x \ 42 = 5/6
b. 25-x \ 40 = 3/8
c. 13+x \ 20 = 3/4
d. 23-x/25 = 4/5