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Simplifying 12 = 0.3r(3 + -4x) 12 = (3 * 0.3r + -4x * 0.3r) 12 = (0.9r + -1.2rx) Solving 12 = 0.9r + -1.2rx Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-0.9r' to each side of the equation. 12 + -0.9r = 0.9r + -0.9r + -1.2rx Combine like terms: 0.9r + -0.9r = 0.0 12 + -0.9r = 0.0 + -1.2rx 12 + -0.9r = -1.2rx Add '1.2rx' to each side of the equation. 12 + -0.9r + 1.2rx = -1.2rx + 1.2rx Combine like terms: -1.2rx + 1.2rx = 0.0 12 + -0.9r + 1.2rx = 0.0 Add '-12' to each side of the equation. 12 + -0.9r + -12 + 1.2rx = 0.0 + -12 Reorder the terms: 12 + -12 + -0.9r + 1.2rx = 0.0 + -12 Combine like terms: 12 + -12 = 0 0 + -0.9r + 1.2rx = 0.0 + -12 -0.9r + 1.2rx = 0.0 + -12 Combine like terms: 0.0 + -12 = -12 -0.9r + 1.2rx = -12 Reorder the terms: 12 + -0.9r + 1.2rx = -12 + 12 Combine like terms: -12 + 12 = 0 12 + -0.9r + 1.2rx = 0 The solution to this equation could not be determined.
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