1.) x/7 = x/8 +4
I know the answer is 224, but how do you work it out? I keep getting 43.6 for the answer
2.) 8x/7 - x = x/14 - 9/2
I know the answer to this one too, it is -63, but when I work it out I get 62.78, PLEASE work it out for me so I can see my mistakes.
2007-01-30 03:55:56 · 2 answers · asked by The Ultimate Answerer 3 in Science & Mathematics ➔ Mathematics
multiply both sides with 56
56x/7 = 56x/8 + 224
8x = 7x + 224 (both sides -7x)
x = 224
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2nd, both sides multiplied with 14
16x - 14x = x - 63
2x = x - 63 (subtract x on both sides
x = -63
2007-01-30 04:30:58 · answer #1 · answered by aeroman762002 5 · 0⤊ 0⤋
u got the solution to the first one,heres the 2nd one..
8x/7 - x=x/14 - 9/2
(8x-7x)/7 = x/14 - 9/2
x/7 = x/14 - 9/2
x/7 - x/14 = -9/2
(2x - x)/14 = -9/2
x/14 = -9/2
x = -9/2 x 14
x = -63
2007-01-30 12:44:46 · answer #2 · answered by clackris 1 · 0⤊ 0⤋