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