2/5=x-2/20
2007-12-03 14:46:42 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Confusion reigns because of lack of brackets.
At a guess, should be written as:-
2/5 = (x - 2) / 20
8 = x - 2
x = 10
2007-12-04 00:20:44 · answer #1 · answered by Como 7 · 2⤊ 2⤋
x = 1/2
2007-12-03 22:51:09 · answer #2 · answered by ? 5 · 1⤊ 1⤋
2/5=x-2/20
+2/20 on each side results to
2/5+2/20=x
the common denominator is 20, so by multiplying by 4/4 the first fraction becomes 8/20. when u add the fractions 8/20+2/20=10/20=1/2. so x=1/2
2007-12-03 22:52:51 · answer #3 · answered by Harris 6 · 1⤊ 1⤋
2/5 = x - 2/20
-> 2/5 = x - 1/10
-> 2/5 + 1/10 = x
-> 4/10 + 1/10 = x
-> 5/10 = x
-> 1/2 = x
-> x = 1/2 = 0.5
2007-12-03 22:48:52 · answer #4 · answered by turkeyphant 3 · 1⤊ 1⤋
x might equal to one half
2007-12-03 22:54:50 · answer #5 · answered by Sciencequagmire 2 · 0⤊ 2⤋