Question

Aflati termenul necunoscut
a)2•(× + 1) + 1 =×+15
b)7×-2>4×+10
vreau urgent multumesc

Answer 1

[tex]a) 2(x+1)+1=x+15\\ 2x+2+1=x+15\\ 2x+3=x+15\\2x-x=15-3\\x=12\\ b) 7x-2 \geq 4x+10\\ 7x-4x \geq 10+2\\ 3x \geq 12\\x \geq 12:3\\x \geq 4[/tex]
x∈[4; + infinit)