I can solve the equation 40 x = 15 x - 20 by multiplying both sides by the LCD or by
Chapter 6, Problem 77(choose chapter or problem)
I can solve the equation 40 x = 15 x - 20 by multiplying both sides by the LCD or by setting the cross product of 40 and x - 20 equal to the cross product of 15 and x.
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