Question

x+4=20³:20

 

Answer 1

x+4=20³:20
x+4=20²
x+4=400
x    = 400-4
x    = 396
 

Answer 2

x+4=20^3÷20

x+4=8.000÷20

x+4=400

x     =400-4

x     =396

Vậy x=396