d) ) [[(27/25=1/2*21/5)]*25/3-1]*3013 - 10^3
Paranteza are valoarea -1.02
[-1.02 * 8(3)-1=-8.5 -1=-9.5
-9.5*3013=-28623.5 - 1000 = -29623.5
e) Paranteza are valoarea 1 , iar cealalta are valoarea 0
1*0=0
10. a) 3/16=0.1875
4/9=0(4)
a*(b+c)=0
a*b+a*c=0 [ distributivitate]
b) a+b=3.(3)
a+b+a+c=3.(3) + 5
Da 14
2a+b+c=14| x4
8a+4b+4c= 56
Mai adunam cu a+c=5 ca sa ne dea ce se cere
8a+4b+4c=56
a+c=5
_______
9a+4b+5c=61
