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Simplifying -2.1x + 5.3 = x + -3.1x + 5.3 Reorder the terms: 5.3 + -2.1x = x + -3.1x + 5.3 Reorder the terms: 5.3 + -2.1x = 5.3 + x + -3.1x Combine like terms: x + -3.1x = -2.1x 5.3 + -2.1x = 5.3 + -2.1x Add '-5.3' to each side of the equation. 5.3 + -5.3 + -2.1x = 5.3 + -5.3 + -2.1x Combine like terms: 5.3 + -5.3 = 0.0 0.0 + -2.1x = 5.3 + -5.3 + -2.1x -2.1x = 5.3 + -5.3 + -2.1x Combine like terms: 5.3 + -5.3 = 0.0 -2.1x = 0.0 + -2.1x -2.1x = -2.1x Add '2.1x' to each side of the equation. -2.1x + 2.1x = -2.1x + 2.1x Combine like terms: -2.1x + 2.1x = 0.0 0.0 = -2.1x + 2.1x Combine like terms: -2.1x + 2.1x = 0.0 0.0 = 0.0 Solving 0.0 = 0.0 Couldn't find a variable to solve for. This equation is an identity, all real numbers are solutions.
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