Question

Determinati numerele naturale x care sunt solutii ale inecuatiilor: a) 2,7+2x<7,9 b) 5(2x-0,5) < sau egal 7,5 Va rog ajutor repede!!!!!!

Answer 1

a) 2,7+2x<7,9⇒2x<7,9-2,7⇒2x<5,2⇒x<2,6

b)5(2x-0,5)≤7,5⇒10x-2,5≤7,5⇒10x≤7,5+2,5⇒10x≤10⇒x≤10/10⇒x≤1