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