Question

4(x+3)-7 greater than or equal to x+3(x+1)

Answer 1

$4(x+3)-7 \geq x+3(x+1) \\ \\ 4x+12-7 \geq x+3x+3 \\ \\ 4x+5 \geq 4x+3 \\ \\ 5\geq 3$

So, the inequality is true for all real numbers x.