Question

resultado da equação 20x-30=40+30-20

Answer 1

$20x-30=40+30-20 20x-30=50 20x=80$
$x= \frac{80}{20} x=4$

Answer 2

20x-30=40+30-20

20x = 40 + 30 - 20 + 30

20x = 70 + 10

20x = 80

x= 80/20

x= 4