49 : x + 56 : x = 7
(49 + 56) : x = 7
105 : x = 7
X = 105 : 7
X = 15
Vậy x = 15
49 : X + 56 : X = 7
(49 + 56) : X = 7
105 : X = 7
X = 105 :7
X = 15
Vậy X = 15
Đúng nha em !
\(49:x+56:x=7\)
\(\left(49+56\right):x=7\)
\(105:x=7\)
\(x=105:7\)
\(x=15\)
Vậy \(x=15\)