d28={1;2;4;7;14;28}
nu ai specificat de ce forma
din nou nu ai specificat forma
m7={28;35;49}
xz+yz=xy+z•2=13+8•2=13+16=29
a)534-406:14-26-13=534-29-26-13=505-26-13=479-13=466
b)73+73-74-76-72=146-74-76-72=72-76-72=-4-72=-76
c) nu inteleg ce reprezinta “+)—)”
a+b+c+d+25+e+f+g=21+22+23+24+25+26+27+28=196
prima zi=a
a doua zi=a•3
a treia zi=a•3+15
785-15=770
770:7=110
prima zi=110
a doua zi=110•3=330
a treia zi=110•3+15=330+15=345
a:19=23,7
a=23,7•19
a=450,3