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(3/4)^3*(4/7)^-7 = (3/4)^2*x // - (3/4)^2*x
(3/4)^3*(4/7)^-7-((3/4)^2*x) = 0
22235661/1048576-9/16*x = 0 // - 22235661/1048576
-9/16*x = -22235661/1048576 // : -9/16
x = -22235661/1048576/(-9/16)
x = 2470629/65536
x = 2470629/65536
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