Solve 1/4(5x-1/2)-5/3 <1/3 ??????????/?
回答 (3)
2009-08-08 4:52 pm
✔ 最佳答案
1/4(5x - 1/2) - 5/3 < 1/36(5x - 1/2) - 40 < 8
30x - 3 < 8 + 40
30x < 48 + 3
x < 51/30 or 17/10 or 1 7/10
Answer: x < 1 7/10
2009-08-08 4:59 pm
1/4(5x - 1/2) - 5/3 < 1/3
(5x - 1/2)/4 < 1/3 + 5/3
5x - 1/2 < 4(2)
5x < 8 + 1/2
5x < 16/2 + 1/2
x < (17/2)/5
x < (17/2)(1/5)
x < 17/10 (1.7)
(5x - 1/2)/4 < 1/3 + 5/3
5x - 1/2 < 4(2)
5x < 8 + 1/2
5x < 16/2 + 1/2
x < (17/2)/5
x < (17/2)(1/5)
x < 17/10 (1.7)
2009-08-08 4:51 pm
1/4(5x-1/2)-5/3 <1/3
Adding 5/3 to both sides,
1/4(5x-1/2) <1/3 + 5/3
1/4(5x-1/2) <6/3
1/4(5x-1/2) < 2
Multiplying both sides by 4,
5x - 1/2 < 8
Adding 1/2 to both sides,
5x < 8 + 1/2
5x < 17/2
Dividing both sides by 5,
x < 17/10
Ans: x < 17/10
____________________.
Adding 5/3 to both sides,
1/4(5x-1/2) <1/3 + 5/3
1/4(5x-1/2) <6/3
1/4(5x-1/2) < 2
Multiplying both sides by 4,
5x - 1/2 < 8
Adding 1/2 to both sides,
5x < 8 + 1/2
5x < 17/2
Dividing both sides by 5,
x < 17/10
Ans: x < 17/10
____________________.
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