3x/10=5x/6
2007-05-07 16:36:38 · 5 answers · asked by Congi 1 in Science & Mathematics ➔ Mathematics
Guessing the answer is very easy, but if you need to show your work, then subtract 3x/10 from each side to get 0 = 5x/6-3x/10 Then putting everything over the common denominator 30 gives 25x/30-9x/30 =16x/30 =0, then multiply by 30/16 to give the answer x = 0
2007-05-07 16:50:45 · answer #1 · answered by pegminer 7 · 0⤊ 0⤋
Normally, equations like this are solved by multiplying both sides by one of the denominators.
multiplying by 10 ...... 3x=50x/6
then by 6 ...... 18x=50x
now, divide both sides by x (assuming x is not 0, can't divide by 0).
18=50
but if x IS 0, the 18x=0 and 50x=0, so it works out.
x=0 is the only possible solution
2007-05-07 23:57:46 · answer #2 · answered by Calvin K 1 · 0⤊ 0⤋
3x/10 = 5x/6
3x/10 - 5x/6 = 0
x(3/10 - 5/6) = 0
x ( -16/30) = 0
so x = 0
2007-05-07 23:46:15 · answer #3 · answered by rscanner 6 · 0⤊ 0⤋
Try to get the x by itself.
or
cross multiply to get 18x=50x, subtract 0=50x-18x, factor x(50-18): x=0
2007-05-07 23:57:58 · answer #4 · answered by collegesniper 2 · 0⤊ 0⤋
first cross multiply you get
18x=50x
18x-50x=0
x(18-50)=0
x=0
2007-05-07 23:47:05 · answer #5 · answered by Josh 3 · 0⤊ 0⤋