123 - 5 . ( x + 4 ) = 38
5 . ( x + 4 ) = 123 - 38
5 . ( x + 4 ) = 85
x + 4 = 85 : 5
x + 4 = 17
x = 17 - 4
x = 13
Nhớ tick cho mik nha !!!
123-5x-20=38
-5x=-65
x=-65:(-5)
x=13
tick nha
123-5.(x+4)=38
5.(x+4)=123-38
5.(x+4)=85
x+4=85:5
x+4=17
x=17-4
x=13
123-5x(X+4)=38
5x(X+4)=123-38
5x(X+4)=85
X+4=85:5
X+4=17
X=17-4
x=13