1.
D14= ( 1;2;7;14)
2.Complementul =90 grade -33 = 57 grade
Suplementul= 180 grade - 33 grade = 147 grade
3.x+ 1/12 =2/3 adica supra
se inmultesc mezii si extremii si obtinem
.3( x+1) = 12×2
3( x+1) =24 ×3
x+1=8
×=7
4.
5. a÷7=C 1 rest 5
a= 7C 1+5
a÷7= C2 rest 9
a= 11C2 +9
a-5 = 7C1
a-9= 11C2
c.m.m.m.c
( 7,11) =7×11=77
a-5=77
a= 82
a-9 =77
a=77+9
a= 86
82÷7 11 rest 5
86 ÷11= 7 rest 9
6.2060
2160
2260
2360
2460
2560
2660
2760
2860
2960
2065
2165
2265
2365
2465
2565
2665
2765
2865
2965
8.
6n+7/ 7n + 8/×6
6n+7 / 6n +7/×7
6n +7/ 42 n+ 48
6n +7 / 42 n + 49
sunt prime intre ele (/ bara acesta trebuie in picioare dreapta adica )
