Question

me ajudem a encontrar o valor
5x-40=20x

Answer 1

5x -40 = 20x 
5x -20x = 40 
-15x  = 40 (-1)
15x = 40 
x = 40/15

Answer 2

5x-40=20x
5x-20=40
-15x=40.(1)
15x=40
x=40\15