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Simplifying -3(4 + -1r) + 4r = 2(4 + t) (4 * -3 + -1r * -3) + 4r = 2(4 + t) (-12 + 3r) + 4r = 2(4 + t) Combine like terms: 3r + 4r = 7r -12 + 7r = 2(4 + t) -12 + 7r = (4 * 2 + t * 2) -12 + 7r = (8 + 2t) Solving -12 + 7r = 8 + 2t Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '12' to each side of the equation. -12 + 12 + 7r = 8 + 12 + 2t Combine like terms: -12 + 12 = 0 0 + 7r = 8 + 12 + 2t 7r = 8 + 12 + 2t Combine like terms: 8 + 12 = 20 7r = 20 + 2t Divide each side by '7'. r = 2.857142857 + 0.2857142857t Simplifying r = 2.857142857 + 0.2857142857t
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