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Simplifying 19 + -7r = -14r + 19 + 7r Reorder the terms: 19 + -7r = 19 + -14r + 7r Combine like terms: -14r + 7r = -7r 19 + -7r = 19 + -7r Add '-19' to each side of the equation. 19 + -19 + -7r = 19 + -19 + -7r Combine like terms: 19 + -19 = 0 0 + -7r = 19 + -19 + -7r -7r = 19 + -19 + -7r Combine like terms: 19 + -19 = 0 -7r = 0 + -7r -7r = -7r Add '7r' to each side of the equation. -7r + 7r = -7r + 7r Combine like terms: -7r + 7r = 0 0 = -7r + 7r Combine like terms: -7r + 7r = 0 0 = 0 Solving 0 = 0 Couldn't find a variable to solve for. This equation is an identity, all real numbers are solutions.
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