(x : 23 + 45). 67 = 894
=> x : 23 + 45 = 894 : 67
=> x : 23 + 45 = \(\frac{894}{67}\)
=> x : 23 = \(\frac{894}{67}\)+ 45
=> x : 23 = \(\frac{3909}{67}\)
=> x = \(\frac{3909}{67}.23\)
=> x = \(\frac{89907}{67}\)
Vậy: x có giá trị = \(\frac{89907}{67}\)
Đề sai rồi bạn ơi! 894 không chia hết cho 67
(x:23+45).67=894
\(\left(x:23+45\right)=\frac{894}{67}\)
\(x:23=\frac{894}{67}-45\)
\(x:23=\frac{-2121}{67}\)
\(x=\frac{-2121}{67}x23\)
\(x=\frac{-48783}{67}\)
\(\left(x:23+45\right).67=894\)
\(x.67\left(894-45x23\right)\)
\(x.67=19527\)
\(x=19527:64\)
\(x=305\left(dư7\right)\)
67x : 1541 + 3015 = 894
67x : 1541 = 894 - 3015 = -2121
x = (-2121 . 1541): 67 = - 48783
x = - 48783
67 x : 1541 + 3015 = 894
67 x : 1541 = 894 - 3015 = - 2121
x = ( - 2121 . 1541 ) : 67 = - 48783
x = - 48783