Question

$20 \times - 30 = 40 + 30 - 20$
alguém me ajuda a resolver

Answer 1

Olá!

$20x - 30 = 40 + 30 - 20$

$20x = 40 + 30 - 20 + 30$

$20x = 80$

$x = 80 \div 20$

$x = 4$

Answer 2

20x-30=40+30-20

20x-30 =50

20x= 50 + 30

20x= 80

x= 80/20

x=8/2

x=4