Question

Rezolvati inecuatiile: a) 79+X<85, b) 5×13+X<7×10, c) 97-X>13×7, d) 8×(153-5×25)=X>6×30

Answer 1

A) 79+X<85, - 85- 79=6 ... -> 79+6<85 b) 5×13+X<7×10, => X € { 1,2,3,4 } c) 97-X>13×7, -> 97 - X > 13x 7 => X€{ 1,2,3,4,5 }