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1989-240:x=1911-(274-8x306:9)
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Răspuns :

Răspuns:

1989 - 240 : x = 1911 - (274 - 2448 : 9)

1989 - 240 : x = 1911 - (274 - 272)

1989 - 240 : x = 1911 - 2

1989 - 240 : x = 1909

240 : x = 1989 - 1909

240 : x = 80

x = 240 : 80

x = 3

Răspuns:

1989-240:x=1911-(274-2448:9)

1989-240:x=1911-(274-272)

1989-240:x=1911-2

1989-240:x=1909

240:x=1989-1909

240:x=80

x=240:80

x=3

VERIFICARE:

1989-240:3=1911-(274-2448:9)

1989-80=1911-(274-272)

1909=1911-2

1909=1909