Question

Afla valoarea lui x din [(x+180:9)7+17]•9=4563

Answer 1

[(x+20)*7+17]*9=4563
(7x+140+17)*9=4563
(7x+157)*9=4563
7x*9+157*9=4563
63x+157*9=4563
63x+1413=4563
63x=4563-1413
63x=3150
x=3150:63
x=50

Answer 2

[(X+180÷9)×7+17]×9=4563 | ÷9
(X+180÷9)×7+17=507 | -17
(X+180÷9)×7=490 |÷7
X+180÷9=70
X+20=70 | -20
X=50
Verificare
[(50+180÷9)×7+17]×9=4563
[(50+20)×7+17]×9=4563
(70×7+17)×9=4563
(490+17)×9=4563
507×9=4563
4563=4563