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Simplifying 15x + 23(x + -3) = 159 Reorder the terms: 15x + 23(-3 + x) = 159 15x + (-3 * 23 + x * 23) = 159 15x + (-69 + 23x) = 159 Reorder the terms: -69 + 15x + 23x = 159 Combine like terms: 15x + 23x = 38x -69 + 38x = 159 Solving -69 + 38x = 159 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '69' to each side of the equation. -69 + 69 + 38x = 159 + 69 Combine like terms: -69 + 69 = 0 0 + 38x = 159 + 69 38x = 159 + 69 Combine like terms: 159 + 69 = 228 38x = 228 Divide each side by '38'. x = 6 Simplifying x = 6
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