simplify x-2 over 2 - x-1 over 5?

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simplify x-2 over 2 - x-1 over 5?

2007-08-31 10:32:33 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

3 answers

(x-2)/2 - (x-1)/5
You need to find the lowest common denominator.
The denominators are 2 and 5. The least common multiple of 2 and 5 is 10.

(x-2)/2 = (x-2)*5/(2*5) = (5x-10)/10

(x-1)/5 = (x-1)*2/(5*2) = (2x-2)/10

Now subtract.
(x-2)/2 - (x-1)/5
= (5x-10)/10 - (2x-2)/10
= (5x-10-2x+2)/10
= (3x-8)/10

2007-09-04 08:57:57 · answer #1 · answered by MsMath 7 · 0⤊ 0⤋

(x - 2) / 2 - (x - 1) / 5
(1/10) (5x - 10 - 2x + 2)
(1/10) (3x - 8)

2007-09-04 10:26:04 · answer #2 · answered by Como 7 · 0⤊ 0⤋

x-2 over 2 - x -1over5, thereis something wrong here. maybe -sign before second x?

2007-08-31 11:33:19 · answer #3 · answered by Dragon'sFire 6 · 0⤊ 0⤋