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X + .085X = 743.75
Get rid of the decimals:
Since the maximum number of decimal places any of the
numbers has is THREE, then we multiply every term
by 1000 (1 with THREE zeros after it)
(1000)X + (1000)(.085X) = (1000)(743.75)
1000X + 85X = 743750
1085X = 743750
X =
X = 685.483871
Edwin