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2010-01-13T20:02:37+01:00
A)ax+bc=4d
ax= 4d -bc
x= (4d -bc)/a

b)3nx-4m=nx+bn
3nx -nx = bn +4m
2nx = bn +4m
x= (bn +4m)/2n

c)-4ax+b=2ax-c
-4ax -2ax = -c -b
-6ax = -c -b
x = (c+b)/6a

d)3px-b+c=7px+4c
3px -7px = 4c +b -c
-4px = 3c +b
x= (3c +b)/(-4p)
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