Question

[(×-1)÷200+180]÷20+29=39

Answer 1

Răspuns:

= [(×-1)÷200+180]÷20+29=39

[(×-1)÷200+180]÷20 = 39-29

[(×-1)÷200+180]÷20 = 10

[(×-1)÷200+180]= 10 x 20

[(×-1)÷200+180]= 200

(×-1)÷200 = 200-180

(×-1)÷200 = 20

×-1 = 20 x 200

×-1 =4000

x = 4000 +1

x = 4001

Answer 2

[(x-1):200+180]:20+29=39

[(x-1):200+180]:20=39-29

[(x-1):200+180]:20=10

(x-1):200+180=10×20

(x-1):200+180=200

(x-1):200=200-180

(x-1):200=20

x-1=20×200

x-1=4000

x=4000+1

x=4001