89-(73-x)=20
73-x =89-20
73-x=69
x=73-69
x=4
89 - ( 73 - x ) = 20
89 - 73 + x = 20
16 + x = 20
x = 20 - 16
x = 4
89-(73-x)=20
73-x=89-20
73-x=69
x=73-69
x=4
89 - (73 - x) =20
73 - x = 89 - 20
73 - x = 69
x = 73 - 69
x = 4
89-(73-x)=20
73-x=89-20
73-x=69
x=73-69
x=4
ai k mình mình k lại
\(\Leftrightarrow\)73-x=69
\(\Leftrightarrow\)x=73-69
\(\Leftrightarrow\)x=4
Vậy x=4
89 - (73 - x) = 20
73 - x = 89 - 20
73 - x = 69
x = 73 - 69
x = 4
89-(73-x)=20
73-x=89-20
73-x=69
x=73-69
x=4
\(89-\left(73-x\right)=20\)
\(\Leftrightarrow73-x=89-20\)
\(\Leftrightarrow73-x=69\)
\(\Leftrightarrow x=73-69\)
\(\Leftrightarrow x=4\)
89-(73-x)=20
73-x=89-20
73-x=69
x=73-69
x=4
Vậy x=4
89 - (73 - x) = 20
73 - x = 89 - 20
73 - x = 69
x = 73 - 69
x = 4
89 -( 73 - x ) = 20
73 - x = 89 - 20
73 - x = 69
x = 73 - 69
x = 4
Cần dấu suy ra và cần ngoặc nữa
(73-x) =89-20
Ví dụ rứa nà