POR FAVOR ME AJUDEM!!!!
1)Resolva as inequações
a)3(x-1)<5-2x
b)2+2x<6(x-5)
c)5x-2(x-1)>7-4x
d) 6x-3(5-2x)>0
e)2(x+3)>5(x-4)
f)4(-2x+5)<-5(x+3)+1
Soluções para a tarefa
a)3(x-1)<5-2x
3x - 3 < 5 - 2x
3x + 2x < 5 + 3
5x < 8
x < 8/5
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b)2+2x<6(x-5)
2 + 2x < 6x - 30
2x - 6x < - 30 -2
-4x < -32 (-1)
x > 32/4
x > 8
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c)5x-2(x-1)>7-4x
5x -2x + 2 > 7 - 4x
5x - 2x + 4x > 7 - 2
7x > 5
x > 5/7
_____________________________
d) 6x-3(5-2x)>0
6x - 15 + 6x > 0
12x > 15
x > 15/12
x> 5/4
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e)2(x+3)>5(x-4)
2x + 6 > 5x - 20
2x - 5x > - 20 - 6
-3x > - 26
- x > -26/3 (-1)
x < 26/3
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f)4(-2x+5)<-5(x+3)+1
- 8x + 20 < - 5x - 15 + 1
- 8x + 5x < - 15 - 20 + 1
- 3x < - 34
- x < -34/3 (-1)
x > 34/3
bons estudos