1/2x - 3 < 6 - x?

2008-06-27 4:41 pm
1 over 2 X -3 > 6 - x...
more inequalities. . .

回答 (4)

2008-06-27 4:52 pm
✔ 最佳答案
1/2x - 3 < 6 - x
+x +x
---------------------
(add x to both sides)
3/2x - 3 < 6
+3 +3
----------------------
(add 3 to both sides)
3/2x < 9
(change to a decimal to divide)
1.5x < 9
-------------
1.5 1.5
(divide by 1.5)

x < 6
2008-06-28 2:26 am
Brackets somewhere perhaps ?????
(1/2) x - 3 < 6 - x
x - 6 < 12 - 2x
3x < 18
x < 6
2008-06-27 11:48 pm
I really wish people would use parentheses.

I'm guessing this is what you're asking:

(1/2)x - 3 < 6 - x

==> (3/2)x - 3 < 6
==> x < (2/3)*9
==> x < 6

Hope this helps.
2008-06-27 11:46 pm
(1/2)x - 3 < 6 - x
x/2 - 3 < 6 - x
x/2 + x < 6 + 3
2(x/2 + x) < 2(9)
x + 2x < 18
3x < 18
x < 18/3
x < 6


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