a, 2x : 2 = 32
2x = 32 . 2
2x = 64
x= 64 : 2
x = 32
Hok tốt.
b, 3x . 3 = 81
3x = 81 : 3
3x = 27
x = 27 : 3
x = 9
~~~Hok tốt~~~
Bn tích cho mik nha
a, 2x : 2 = 32
2x = 32 . 2
2x = 64
x = 32
b, 3x . 3 = 81
3x = 81 : 3
3x = 27
x = 27 : 3
x = 9
a) 2x: 2 = 32
2x = 32: 2
2x = 16
x = 16: 2
x = 8
Lại:
a) 2x: 2 = 32
2x = 32. 2
2x = 64
x = 32
b) 3x. 3 = 81
3x = 81: 3
3x = 27
x = 27: 3
x = 9
a) 2x : 2 = 32
=>2x = 32. 2
=>2x = 64
=>x = 32
b) 3x. 3 = 81
=>3x = 81: 3
=>3x = 27
=>x = 27: 3
=>x = 9