3.(7 + x) = 88 - 82
3.(7 + x) = 24
7 + x = 24 : 3
7 + x = 8
x = 8 - 7
x = 1
3 . ( 7 + x ) = 88 - 82
3 . ( 7 + x ) = 88 - 64
3 . ( 7 + x ) = 24
7 + x = 24 : 3
7 + x = 8
x = 8 - 7
x = 1
\(3.\left(7+x\right)=88-8^2\)
\(3\left(x+7\right)=88-64\)
\(3\left(x+7\right)=24\)
\(x+7=8\)
\(x=1\)
vậy \(x=1\)
Tìm x :
3. ( 7 + x ) = 88 - 82
3 . ( 7 + x ) = 88 - 64
3 . ( 7 + x ) = 24
7 + x = 24 : 3
7 + x = 8
x = 8 - 7
x = 1
3.(7 + x) = 88 - 82
3.(7 + x) = 24
7 + x = 24 : 3
7 + x = 8
x = 8 - 7
x = 1
vậy_____
3.(7 + x) = 24
7 + x = 24 : 3
7 + x = 8
x = 8 - 7
x = 1
vậy x=1