Răspuns :

Giorgianairina18id
(23a+14)-54-72=555
23a-122=555
23a=667
a=29
RihanaMariaid

Bună !

( a × 23 + 14 ) - 3 × 2 × 9 - 18 × 4 = 555

( a × 23 + 14 ) - 6 × 9 - 18 × 4 = 555

( a × 23 + 14 ) - 54  - 18 × 4 = 555

( a × 23 + 14 ) - 54 - 72 = 555

23a + 14 - 54 - 72 = 555

23a + 14 - 126 = 555

23a - 112 = 555

23a = 555 + 112

23a = 667

a = 667 : 23

a = 29

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