Answers

2016-02-06T21:03:22+05:30
2/7 x X - 18/7 + X/3 = 3
2 X / 7+ X/3 - 18/7 =3
6X+7X/21-18/7 =3
13X/21-18/7 = 3
13X/21 =3+18/7
13X/21 = 21+18/7
13X/21 = 39/7
13X = 39x21/7
X  =  39 x 21/7 x 13
X =   9
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2 4 2
2016-02-06T21:38:34+05:30
2x/7- 18/7+x/3=3
2x/7+x/3= 18/7+3
6x/21 + 7x/21= 18/7 + 21/7
13x/21 + 39/7
91x = 819
x = 819/91
_____
/x = 9 /
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