1)
3x-3+2<=5x+6
2x>=-7
x>=-7/2
2)
x/3-x/4 >1/3-1/2
x/12>-1/6
x>-2
3)
(x+3)/(x+5) +3 >0
(x+3+3x+15)/(x+5) >0
(4x+18)/(x+5)>0
q=4x+18
raiz ==>x=-9/2
q--------(-9/2)++++++++
p=x+5
raiz ==>x=-5
p---------(-5)++++++++++
Estudo de siais:
q----------(-9/2)++++++++
p-----(-5)+++++++++++++++
q/p+++(-5)---(-9/2)++++++++
x < -5 U x>-9/2
4)
3-x>0
x-3<0
x<3
3x-3+2â¤5x+6
3x-5xâ¤6+1
-2xâ¤7
2xâ¥-7
xâ¥-7/2
2)x/3-x/4>1/3-1/2
4x-3x>4-6
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Answers & Comments
Verified answer
1)
3x-3+2<=5x+6
2x>=-7
x>=-7/2
2)
x/3-x/4 >1/3-1/2
x/12>-1/6
x>-2
3)
(x+3)/(x+5) +3 >0
(x+3+3x+15)/(x+5) >0
(4x+18)/(x+5)>0
q=4x+18
raiz ==>x=-9/2
q--------(-9/2)++++++++
p=x+5
raiz ==>x=-5
p---------(-5)++++++++++
Estudo de siais:
q----------(-9/2)++++++++
p-----(-5)+++++++++++++++
q/p+++(-5)---(-9/2)++++++++
x < -5 U x>-9/2
4)
3-x>0
x-3<0
x<3
3x-3+2â¤5x+6
3x-5xâ¤6+1
-2xâ¤7
2xâ¥-7
xâ¥-7/2
2)x/3-x/4>1/3-1/2
4x-3x>4-6
x>-2