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[3+(x-5)x7]:2=19.va rog dau coroana!!!

Răspuns :

Răspuns:

[3+(x-5)x7]:2=19

3+(x-5)·7=19·2

3+7x-35=38

7x=38+35-3

x=70:7

x=10

Răspuns:

(3+7x-35):2=19

(7x-32):2=19

7x-32=38

7x=70

x=10