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[940+5x(12+a)]:3+5=410


Răspuns :

[940 + 5 * (12 + a)] : 3 + 5 = 410
[940 + 5 * (12 + a)] : 3 = 410 - 5
940 + 5 * (12 + a) = 405 * 3
5 * (12 + a) = 1215 - 940
12 + a = 275 : 5
a = 55 - 12
a = 43