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Savantulde100
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34-[6+(12×7-2×a+36)]÷8=20
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Răspuns :

PacMan11
34-[6+(84-2a+36)]:8=20
34-[6+(120-2a)]=20×8
34-[126-2a]=160
-[126-2a]=160-34
-126+2a=126
2a=126+126
2a=252
a=252:2
a=126

Proba
34-[6+(12×7-2×126+36)]:8=20
34-[6+(84-252+36)]=20×8
34-[6+(-132)]=160
34-[6-132]=160
34-[-126]=160
34+126=160
160=160

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