\(\frac{1234x567-667}{567+1234x566}+\frac{7}{9}\)
Tính \(A=\frac{1234x567-667}{567+1234x566}\)
1234x567-667=699011=1
567+1234x566=699011=1
\(\frac{1234x567-667}{5677+1234x566}\)
= 1234x(566+1)-667 / 5677+ 1234 x 566
= 1234x566 + 1234x1 - 667 / 5677 + 1234 x 566
bớt 2 vế đi cho 1234x566
ta có ; 1234
5677
1234x567-667/567+1234x566
45x16-17/45x15+28
667x874+251/678x874-623
Tính nhanh :
1234x567-667
567+1234+566
Tính nhanh
1234x567-667/567+1234+566
\(\frac{1234\:×\:567\:-667}{567+1234\:×566}\)
Tính nhanh:
1234x567-667 / 567+1234+566
\(\frac{1234\times567-667}{567}+1234+566\)
\(=\frac{1234\times567-567-100}{567}+1234+566\)
\(=\frac{1234\times567}{567}-\frac{567}{567}-\frac{100}{567}+1234+566\)
\(=1234-1-\frac{100}{567}+1234+566\)
\(=1234\times2+564+\left(1-\frac{100}{567}\right)\)
\(=3032+\frac{467}{567}=3032\frac{467}{567}\)
\(\frac{1234\cdot567+667}{567+1234\cdot566}=?\)
Tính giá trị các biểu thức:
A=0,36 x 350 + 1,2 x 20,3 + 9 x4 x 4,5
B=\(\frac{1}{6}\)x\(\left(1\frac{1}{2}-\frac{3}{4}\right)\)\(+\)\(0,25\)
C= 1234 x 567 - 667
----------------------- \(=\)
567 + 1234 x 566