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rezolva exercitile :
7 * a - 15 : 3+ 9 =

16+72 : b * 10 -32

va rog repede


Răspuns :

7a-5+9=0
7a+4=0 => 7a=-4=> a=-4/7

16+72:10b-32=0
-16+72:10b=0
72:10b=16
10b=16*72
10b=1152
b= 115.2

Coroană? :3