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Simplifying -7r + -4 = 4 + r Reorder the terms: -4 + -7r = 4 + r Solving -4 + -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. -4 + -7r + -1r = 4 + r + -1r Combine like terms: -7r + -1r = -8r -4 + -8r = 4 + r + -1r Combine like terms: r + -1r = 0 -4 + -8r = 4 + 0 -4 + -8r = 4 Add '4' to each side of the equation. -4 + 4 + -8r = 4 + 4 Combine like terms: -4 + 4 = 0 0 + -8r = 4 + 4 -8r = 4 + 4 Combine like terms: 4 + 4 = 8 -8r = 8 Divide each side by '-8'. r = -1 Simplifying r = -1
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