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