![](https://rs.olm.vn/images/avt/0.png?1311)
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
a) \(63,45\times3,2-2\times63,45-63,45\times0,2\)
\(=63,45\times\left(3,2-2-0,2\right)\)
\(=63,45\times1\)
\(=63,45\)
b) \(5,67\times4,8+5,67\times4,2+5,67\)
\(=5,67\times\left(4,8+4,2+1\right)\)
\(=5,67\times10\)
\(=56,7\)
![](https://rs.olm.vn/images/avt/0.png?1311)
x + 5,67 = 18,3 - 6,98
x + 5,67 = 11,32
x = 11,32 - 5,67
x = 5,65
Vậy x = 5,65
![](https://rs.olm.vn/images/avt/0.png?1311)
a: 5,67x2,5x0,4=5,67
1,4x3,6+1,4x6,4=1,4x10=14
b: 0,25x0,68x40=10x0,68=6,8
25,8x1,02-25,8x1,01=25,08x0,01=0,2508
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(a)\) \(5,67 \) \(\times \) \(2,5 \) \(\times\) \(0,4\)
\(= 5,67 \) \(\times \) \(( \) \(2,5 \) \(\times \) \(0,4 \) \() \)
\(= 5,67 \times 1 \)
\(= 5,67\)
\(b) \) \(1,47 \times 3,6 + 1,47 \times 6,4\)
\(= 1,47 \times ( 3,6 + 6,4 )\)
\(= 1,47 \times 10 \)
\(= 14,7\)
\(c) \) \(0,25 \times 0,68 \times 40 + 25,8 \times 1,02 - 25,8 \times 1,01\)
\(= 0,68 \times ( 0,25 \times 40 ) + 25,8 \times 1,02 - 25,8 \times 1,01\)
\(= 0,68 \times 1 + 25,8 \times ( 1,02 - 1,01 )\)
\(= 0,68 + 25,8 \times 0,01\)
\(= 0,68 + 0,258 \)
\(= 0,938\)
![](https://rs.olm.vn/images/avt/0.png?1311)
a) 13140 - 20601 : 327 - 4245
= 13140 - 63 - 4245
= 13077 - 4245
= 8832
b) 782,60 - ( 1784 - 1569 ) x 46
= 782,60 - 215 x 46
= 782,60 - 9890 = -9107,4
Tìm x :
a) 65 * x + 95784 = 10159
=> 65*x = 10159 - 95784
=> 65 *x = -85,625
b) 5,67 - x = 6,7 + 1,8
5,67 - x = 8,5
=> x = 5,67 - 8,5
=> x = -2,83
27,915111