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2 Answers

This is a calculated answer:
x = 0.6318


Dear Galeboe:
When I interpreted the problem, I interpreted it as

(42x) - 1 = (5x) + 2

which, of course is quite different from the way Robert interpreted the question, to wit

4(2*x-1) = 5(x+2)

This is why learning to use parentheses and brackets is so important.  Chances are I was trying to solve the wrong system of equations.