a) 3885:(\(x\) x 21) =37.
(\(x\) x 21) = 3885 : 37
(\(x\) x 21) = 105
\(x\) = 105 : 21
\(x\) = 5.
Vậy \(x\) =5.
b) 162:x+216:x=6
(162 + 216) : x =6
378 : x = 6
x = 378 : 6
x = 63.
Vậy x = 63.
# HOK TỐT #
a) 3885:(X * 21) =37 b) 162:x+216:x=6
x . 21 = 3885 : 37 (162+216):x=6
x . 21 = 105 378:x=6
x= 105: 21 x = 378:6
x = 5 x = 63
Tìm x :
a) 3885:(x. 21) =37
x. 21 =3885:37
x. 21 =105
x =105:21
x =5
Vậy x = 5
b) 162:x+216:x=6
(162 + 216 ) : x = 6
378 : x = 6
x = 378 : 6
x = 63
Vậy x=63