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Simplifying -8 + 4r = r + 2(r + -7) Reorder the terms: -8 + 4r = r + 2(-7 + r) -8 + 4r = r + (-7 * 2 + r * 2) -8 + 4r = r + (-14 + 2r) Reorder the terms: -8 + 4r = -14 + r + 2r Combine like terms: r + 2r = 3r -8 + 4r = -14 + 3r Solving -8 + 4r = -14 + 3r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-3r' to each side of the equation. -8 + 4r + -3r = -14 + 3r + -3r Combine like terms: 4r + -3r = 1r -8 + 1r = -14 + 3r + -3r Combine like terms: 3r + -3r = 0 -8 + 1r = -14 + 0 -8 + 1r = -14 Add '8' to each side of the equation. -8 + 8 + 1r = -14 + 8 Combine like terms: -8 + 8 = 0 0 + 1r = -14 + 8 1r = -14 + 8 Combine like terms: -14 + 8 = -6 1r = -6 Divide each side by '1'. r = -6 Simplifying r = -6
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