Matematică, întrebare adresată de gaby501, 9 ani în urmă

54-45:[30-24:(x-15)-7]×15+15:15=10

Răspunsuri la întrebare

Răspuns de needhelp112
6
54-45:[30-24:(x-15)-7]×15+15:15=10
54-45:[30-24:(x-15)-7]x15 + 1 = 10
54-45:[30-24:(x-15)-7]x15 = 10-1
54-45:[30-24:(x-15)-7]x15 = 9
45:[30-24:(x-15)-7]x15 = 54-9
45:[30-24:(x-15)-7]x15 = 45
45:[30-24:(x-15)-7] = 45:3
45:[30-24:(x-15)-7] = 15
30-24:(x-15)-7 = 45:15
30-24:(x-15)-7 = 15
30-24:(x-15) = 15+7
30-24:(x-15) = 22
24:(x-15) = 30-22
24:(x-15) = 8
x-15 = 24"8
x-15 = 3
x = 15+3
x = 18

marymec: 45:[30-24:(x-15)-7]x15 = 45
45:[30-24:(x-15)-7] = 45:3
marymec: nu inteleg de ce ai impartit la 3
marymec: multumesc
needhelp112: ai dreptate, am gresit, am facut in gand 45:15=3 si am scris 45:3, dar mai departe am facut corect, rezultatul final e corect
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