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Simplifying 0.3x + -0.3(0.3) * x = 0.21x Multiply -0.3 * 0.3 0.3x + -0.09x = 0.21x Combine like terms: 0.3x + -0.09x = 0.21x 0.21x = 0.21x Add '-0.21x' to each side of the equation. 0.21x + -0.21x = 0.21x + -0.21x Combine like terms: 0.21x + -0.21x = 0.00 0.00 = 0.21x + -0.21x Combine like terms: 0.21x + -0.21x = 0.00 0.00 = 0.00 Solving 0.00 = 0.00 Couldn't find a variable to solve for. This equation is an identity, all real numbers are solutions.
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