\(3\left(x-2\right)+5=20\)
\(=>3\left(x-2\right)=15\)
\(=>x-2=5\)
\(=>x=7\)
3 ( x - 2 ) + 5 = 20
=>3(x-2)=15
=>x-2=5
=>x=7
KL:...
3 ( x - 2) + 5 = 20
3 ( x - 2 ) = 25
x - 2 = 25/3
x = 31/3
k cho mk nha bạn
3 ( x - 2 ) + 5 = 20
3 ( x - 2 ) = 20 - 5
3 ( x - 2 ) = 15
x - 2 = 15 : 3
x - 2 = 5
x = 5 + 2
x = 7
Vậy x = 7
3 ( x - 2 ) + 5 = 20
3 ( x - 2 ) = 20 - 5
3 ( x - 2 ) = 15
x - 2 = 15 : 3
x - 2 = 5
x = 5 + 2
x = 7
Vậy x = 7
3(x-2)=20-5
3(x-2)=15
x-2=15:3
x-2=5
x=5+2
x=7
vay x=7