Question

Am nevoie de rasp va rog frumos ​

Answer 1

Răspuns:

X-4《7

x《11

A={11,10,9,8...-infinit}

-x+4《7

-x《3

x》-3

A={-3,-2,-1,0....+infinit}

b)-×+2=5

x=-3

B={3}

x-2=5

x=7

B={7}