Question

Mn giúp em với ạ 

Answer 1

Thi hả ta ơi:D

Answer 2

\(49:x+56:x=7\\ \Rightarrow\left(49+56\right):x=7\\ \Rightarrow105:x=7\\ \Rightarrow x=105:7\\ \Rightarrow x=15\)

Answer 3

 Từ đề bài => (49+56):x=7

=>x=(49+56):7=15

Kết luận...

Answer 4

49 : x + 56 : x = 7

(49 + 56) : x = 7

105 : x = 7

x = 105 : 7

x = 15

Answer 5

\(19,\Leftrightarrow\left(49+56\right):x=7\Leftrightarrow105:x=7\Leftrightarrow x=15\)

Vậy: ...

Answer 6

\(\rightarrow\left(49+56\right)\div x=7\)

\(\rightarrow105\div x=7\)

\(\rightarrow105\div7\)

\(\rightarrow=15\)