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(245:5+5×x):9+89=100

Răspuns :

(245:5+5×x):9 =100 - 89 = 11
 
245:5+5×x = 11 × 9 = 99

49 + 5x = 99
5x = 99 - 49 = 50
x = 50:5 = 10
Capsunica35
(245:5+5*x):9+89=100
(49+5x):9=100-89
49+5x=11*9
5x=99-49
x=50:5
x=10