Question

Rezolvati in N inecuatia 4,7x-10,7 mai mare sau egal cu 12,8

Answer 1

[tex]4.7x-10.7\ge \:12.8 \\ \\ 4.7x\cdot \:10-10.7\cdot \:10\ge \:12.8\cdot \:10 \\ \\ 47x-107\ge \:128 \\ \\ 47x-107+107\ge \:128+107 \\ \\ 47x\ge \:235 \\ \\ \frac{47x}{47}\ge \frac{235}{47} \\ \\ x\ge \:5[/tex]