To solve the equation X*0.9 - 20 - 10 - 5 = 185, we need to isolate the variable X. First, combine like terms on the left side of the equation: X*0.9 - 20 - 10 - 5 = 0.9*X - 35 Next, move the constant term to the right side of the equation: 0.9*X - 35 = 185 Now, add 35 to both sides of the equation: 0.9*X - 35 + 35 = 185 + 35 0.9*X = 220 Finally, divide both sides of the equation by 0.9 to solve for X: 0.9*X/0.9 = 220/0.9 X = 244.44 Therefore, X is approximately equal to 244.44.

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