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Virginiamaria9p32a30
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(275-5◎d):5+380:4◎2=195

Răspuns :

(275-5×d):5+380:4×2=195
(275-5d):5+95×2=195
(275-5d):5+190=195
(275-5d):5=195-190
(275-5d):5=5
275-5d=5×5
275-5d=25
-5d=25-275
-5d=-250 |:(-5)
d=50

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