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Simplifying Er + 54 = 10r + 15 Reorder the terms: 54 + rE = 10r + 15 Reorder the terms: 54 + rE = 15 + 10r Solving 54 + rE = 15 + 10r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-10r' to each side of the equation. 54 + -10r + rE = 15 + 10r + -10r Combine like terms: 10r + -10r = 0 54 + -10r + rE = 15 + 0 54 + -10r + rE = 15 Add '-54' to each side of the equation. 54 + -10r + -54 + rE = 15 + -54 Reorder the terms: 54 + -54 + -10r + rE = 15 + -54 Combine like terms: 54 + -54 = 0 0 + -10r + rE = 15 + -54 -10r + rE = 15 + -54 Combine like terms: 15 + -54 = -39 -10r + rE = -39 Reorder the terms: 39 + -10r + rE = -39 + 39 Combine like terms: -39 + 39 = 0 39 + -10r + rE = 0 The solution to this equation could not be determined.
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