Răspuns :
a)
(a:5-2)x5+2=107
(a:5-2)x5=105
a:5-2=105:5
a:5-2=21
a:5=21+2
a:5=23
a=23x5
a=115
b) 3,7,15,31,63,127,255 .
(a:5-2)x5+2=107
(a:5-2)x5=105
a:5-2=105:5
a:5-2=21
a:5=21+2
a:5=23
a=23x5
a=115
b) 3,7,15,31,63,127,255 .
A)
(a:5-2)x5+2=107
(a:5-2)x5=105
a:5-2=105:5
a:5-2=21
a:5=21+2
a:5=23
a=23x5
a=115
B) 3,7,15,31,63,127,255 .
(a:5-2)x5+2=107
(a:5-2)x5=105
a:5-2=105:5
a:5-2=21
a:5=21+2
a:5=23
a=23x5
a=115
B) 3,7,15,31,63,127,255 .