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a fost răspuns

Calculati media aritmetica a numerelor :
-24
-----
36
si

-35
-----
42

Răspuns :

Nitugheorghe57
-24/36,-35/42

ma=a+b/2
-24/36+(-35)/42/2=
7(-24)+6(-35)/252/2=

-168-210/252/2=
-378/252/2=
-378/252*1/2=
-378/504=-189/252
succes



succes
Mihaelap
[( - 24/36) + (- 35/42)] : 2 = 
[(- 168/252) + (- 210/252)] : 2 =
( -168/252 - 210/25) : 2 =
- 378/252 : 2 = 
- 378/252 * 1/2 =
- 378/504 =     (simplificam cu 2)
- 189/252 =   (simplificam cu 9)
- 21/28 =   (simplificam prin 7)
- 3/4

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