A, 890 : x = 35 dư 15
=> x = (890 - 15) : 35
=> x = 875 : 35
=> x = 25
B, 648 - 34 x X = 444
34 x X = 648 - 444
34 x X = 204
X = 204 : 34
X = 6
C, 1482 : X + 23 = 80
1482 : X = 80 - 23
1482 : X = 57
X = 1482 : 57
X = 26
a, 890 : x = 35 dư 15
x = (890 - 15) : 35
x = 875 : 35
x = 25
a) 890 : \(x\)= 35 dư 15
\(x\)= (890 - 15) : 35
\(x\)= 875 : 35
\(x\)= 25
b) 648 - 34 x \(x\)= 444
34 x \(x\)= 648 - 444
34 x \(x\)= 204
\(x\)= 204 : 34
\(x\)= 6
c) 1482 : \(x\)+ 23 = 80
1482 : \(x\)= 80 - 23
1482 : \(x\) = 57
\(x\)= 1482 : 57
\(x\)= 26