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93 x {[(84 x5 +95:a) +33 x 4]-63 x2}+89 x52 =46013
 aflati a=?

Răspuns :

Deva
93x{[(420+95/a)+132]-126}+4628=46013
93x{[(420+95/a)+132]-126}=46013-4628=41385
{[(420+95/a)+132]-126}=41385:93=445
[(420+95/a)+132=445+126=571
(420+95/a)=571-132=439
420a+95=439a
95=439a-420a
95=19a
a=5

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