Aflati termenul necunoscut din proportia
a)x-4/4=x+2/5
b)3x-2/2x+1=6/5
c)x+1/x=15/14
d)x+1/x+2=2/3
e)x+2/x+4=4/6
f)2x+1/8=x+3/8
g)x+2/2x+1=7/65
h)3x+2/2x+5=7/6
i)8x+5/4x+9=7/10
j)x+3/8=2x/11