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2016-02-10T12:03:52+05:30

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A*4=e -----eq[1]
b/4=e ------eq[2]
c+4=e ------eq[3]
d - 4 = e-----eq[4]
adding eq[1]+[2]+[3]+[4]
100=e/4+4e+e-4+e+4
100=e/4+6e
100=e+24e/4
400=25e
e=400/25
e=20
9 3 9
thanks  :)
400/25= 16 thanks , i got the method
2016-02-10T19:38:20+05:30
A+b+c+d=100.......(1)

a=e/4
b=4e
c= e-4
d= e+4
add the values of a,b,c and in equation (1) and we get,
(e/4) + 4e +e-4+e+4 =100
(e/4)+4e+2e =100
(e/4) +6e =100
(24e+e)/4 = 100
24e +e = 100×4
25e =400
therefore, e = 400/25 = 16.
we get the value of e is 16.
9 4 9