Question

Resolva a inequação e determine o conjunto solução dos possiveis valores de x, sendo U = {5,10, 15, 20, 25, 30}

1 - 3x >/5
2 - 2x + 10>20
3 - 3x + 5> 25
4 - 2x + 5>25
5 - 2x + 50>100
6 - 5x + 10>20
7 - 2x + 5<10
8 - 5x + 10<20
9 - 2x + 50<100
10 - 2x + 5>10


Obs: Quero os calculos

Answer 1

1)
3x > 5
x > 5/3

R.: {5,10,15,20,25,30}

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2)
2x + 10>20
2x > 20 - 10
2x > 10
x > 10/2
x > 5

R.: {10,15,20,25,30}

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3) 3x + 5 > 20

3x + 5> 20
3x > 20 - 5
3x > 15
x > 15/3
x > 5

R.: {10,15, 20,25,30}

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4)
 
2x + 5 > 25
2x > 25 - 5
2x > 20
x > 20/2
x > 10

R.: {15,20,25,30}

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5) 
2x + 50>100
2x > 100 - 50
2x > 50
x > 50/2
x > 25

R.: {30}

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6)
5x + 10 > 20
5x > 20 - 10
5x > 10
x > 10/5
x > 2

R.: {5,10,15,20,25,30}

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7) 
2x + 5 < 10
2x < 10 - 5
2x < 5
x < 5/2

R.: {Ф}

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8) 
5x + 10<20
5x < 20 - 10
5x < 10
x < 10/5
x < 2

R.: {Ф}
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9) 
2x + 50<100
2x < 100 - 50
2x < 50
x < 50/2
x < 25

R.: {5,10,15,20)


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10)
2x + 5>10
2x > 10 - 5
2x > 5
x > 5/2

R.: {5,10,15,20,25,30}