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Simplifying 0.07(3t + -9) = 0.21(t + -2) + -0.21 Reorder the terms: 0.07(-9 + 3t) = 0.21(t + -2) + -0.21 (-9 * 0.07 + 3t * 0.07) = 0.21(t + -2) + -0.21 (-0.63 + 0.21t) = 0.21(t + -2) + -0.21 Reorder the terms: -0.63 + 0.21t = 0.21(-2 + t) + -0.21 -0.63 + 0.21t = (-2 * 0.21 + t * 0.21) + -0.21 -0.63 + 0.21t = (-0.42 + 0.21t) + -0.21 Reorder the terms: -0.63 + 0.21t = -0.42 + -0.21 + 0.21t Combine like terms: -0.42 + -0.21 = -0.63 -0.63 + 0.21t = -0.63 + 0.21t Add '0.63' to each side of the equation. -0.63 + 0.63 + 0.21t = -0.63 + 0.63 + 0.21t Combine like terms: -0.63 + 0.63 = 0.00 0.00 + 0.21t = -0.63 + 0.63 + 0.21t 0.21t = -0.63 + 0.63 + 0.21t Combine like terms: -0.63 + 0.63 = 0.00 0.21t = 0.00 + 0.21t 0.21t = 0.21t Add '-0.21t' to each side of the equation. 0.21t + -0.21t = 0.21t + -0.21t Combine like terms: 0.21t + -0.21t = 0.00 0.00 = 0.21t + -0.21t Combine like terms: 0.21t + -0.21t = 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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