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Simplifying ra + 3r = 2a + 7 Reorder the terms: ar + 3r = 7 + 2a Solving ar + 3r = 7 + 2a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-2a' to each side of the equation. ar + -2a + 3r = 7 + 2a + -2a Reorder the terms: -2a + ar + 3r = 7 + 2a + -2a Combine like terms: 2a + -2a = 0 -2a + ar + 3r = 7 + 0 -2a + ar + 3r = 7 Add '-3r' to each side of the equation. -2a + ar + 3r + -3r = 7 + -3r Combine like terms: 3r + -3r = 0 -2a + ar + 0 = 7 + -3r -2a + ar = 7 + -3r Reorder the terms: -7 + -2a + ar + 3r = 7 + -3r + -7 + 3r Reorder the terms: -7 + -2a + ar + 3r = 7 + -7 + -3r + 3r Combine like terms: 7 + -7 = 0 -7 + -2a + ar + 3r = 0 + -3r + 3r -7 + -2a + ar + 3r = -3r + 3r Combine like terms: -3r + 3r = 0 -7 + -2a + ar + 3r = 0 The solution to this equation could not be determined.
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