\(x-\frac{3}{4}=6\cdot\frac{3}{8}\)
\(x-\frac{3}{4}=\frac{9}{4}\)
\(x=\frac{9}{4}+\frac{3}{4}\)
\(x=\frac{12}{4}=3\)
\(\frac{7}{8}\cdot x=3-\frac{1}{2}\)
\(\frac{7}{8}\cdot x=\frac{5}{2}\)
\(x=\frac{7}{8}:\frac{5}{2}\)
\(x=\frac{7}{20}\)
\(x+\frac{1}{2}\cdot\frac{1}{3}=\frac{3}{4}\)
\(x+\frac{1}{6}=\frac{3}{4}\)
\(x=\frac{3}{4}-\frac{1}{6}\)
\(x=\frac{7}{12}\)
1. 4 1/7 - x = 2 5/9
2. 3 × x = 12,18
3. 4 1/2 × x = 5
4. 3/4 × x = 1
5. 4/5 : x = 3
6. 12/x = 4
7. 4/7 : x = 4/7
8. 2x - 3/4 = 7/8
P/s : Giúp mk nha mấy bạn 😘😘
bài 3: Tính
a) \(\dfrac{4}{5}x\dfrac{5}{8}:\dfrac{4}{5}\)
b) \(\dfrac{5}{6}+\left(\dfrac{1}{2}:\dfrac{3}{2}+\dfrac{4}{5}\right)\)
bài 4 Tìm y
\(\dfrac{3}{4}+y:\dfrac{2}{5}=\dfrac{37}{16}\) 456 + y : 87 = 23987
Tính nhanh :
1 + 7 + 8 + 15 + 23 + ... + 160
1 + 4 + 5 + 9 + 14 + ... + 60 + 97
A = 1 x 4 + 2x 5 + 3 X 6 + 4 x 7 + ... + n x ( n + 3 )
Tìm số tự nhiên x a) 5.1/2< x< 6.3/4 b) 7.2/3
Tìm x, biết: a) 26.3/4 + x= 30 b) x - 2.1/3 = 1.1/6 c) 8.2/3-x=7.1/4 Em đang cần gấp ạ
Tính nhanh:
2 x 53 x12 +4 x 6 x 87 - 3 x 8 x 40
1/2x +( 2/4+3/6)= 4/5
3/8+x=2/5
a, x - 3/4=6 x 3/8
b, 7/8 : x=3 - 1/2
c, x + 1/2 x 1/3=3/4