a) 5x+3=28
5x =28-3
5x =25
x =25:5
x =5
b) (x-1)3=64
(x-1)3=43
=>x-1=3
x =3+1
x =4
a) 5x+3=28
5x =28-3
5x =25
x =25:5
x =5
b) (x-1)3=64
(x-1)3=43
=>x-1=3
x =3+1
x =4
copy à
a)5x+3=28
5x=28-3
5x=25
x=25:5
x=5
b) (x-1)3=64
(x-1)3=43
x-1=3
x=3+1
x =4
Câu b sai rồi các e ráp 4 vô x ra kết quả sai nhé mấy chế
5x+3=28
5x =28-3
5x =25
x =25:5
x =5
2,(x-1)^3=64
= 4^3
=4
=4+1
=5