Question

verificati care inecuatie are ca solutie numarul 3:a)x+5<9;b)x+6_<7;c)x-3<1;d)x+4<_5.

Answer 1

a)x+5<9⇒x<9-5⇒x<4 1,2,3,

b)x+6≤7⇒x≤7-6⇒x≤1 F 
c)x-3<1⇒x<1+3⇒x<41,2,3,
d)x+4≤5⇒x≤5-4⇒x≤1
succes