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[ ( a + 270 : 3 ) x 5 + 100 ] : 600 = 1 ma puteti ajuta dau coronita

Răspuns :

( a + 270 : 3 ) x 5 + 100 = 1 x 600
( a + 90 ) x 5 + 100 = 600
( a + 90 ) x 5 = 600 - 100
( a + 90 ) x 5 = 500
a + 90 = 500 : 5
a + 90 = 100
a = 100 - 90
a = 10