3(x+4)>=5x-12?

3x+12>=5x-12
3x+24>=5x
24>=2x
12>=x

thats it simplified but what did you want?

develop left side
3x+12>=5x-12
-2x>=24
x<=-12

3x + 12 ≥ 5x - 12
24 ≥ 2x
12 ≥ x
OR
x ≤ 12

3x+12 >= 5x - 12

24 >= 5x - 3x

24 >= 2x

(12 >= x ) -1

x <= -12

x <= 0

3(x + 4) ≧ 5x - 12
3*x + 3*4 ≧ 5x - 12
3x + 12 ≧ 5x - 12
3x - 5x ≧ -12 - 12
-2x ≧ -24
x ≦ -24/-2
x ≦ 12

its simple dude ...

3x4 = 12 and x+4 = 4x

which is ...

5x-12...am not that good in maths anyway ... I will get 2 points for my stupid answer.

3(x+4)>=5x-12
3x+12>=5x-12
2x<=24
x<=12

repost your question.. it is quite vague.