Question

Pentru care valori ale variabilei valoarea raportului algebric este numar intreg
a) 7 supra x-2 b)-5 supra 3-x c) 9 supra 2+x d)-4 supra x+10 ?

Answer 1

a)
x-2={-7,-1,+1,+7}
x={-5,+1,+3,+9}
b)
3-x={-5,-1,+1,+5}
x-3={-5,-1,+1,+5}
x={-2,+2,+4,+8}
c)
x+2={-9,-3,-1,+1,+3,+9}
x={-11,-5,-3,-1,+1,+7}
d)
x+10={-4,-2,-1,+1,+2,+4}
x={-14,-12,-11,-9,-8,-6}