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Simplifying 7 + -7r = -4r + 4 Reorder the terms: 7 + -7r = 4 + -4r Solving 7 + -7r = 4 + -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 + -7r + 4r = 4 + -4r + 4r Combine like terms: -7r + 4r = -3r 7 + -3r = 4 + -4r + 4r Combine like terms: -4r + 4r = 0 7 + -3r = 4 + 0 7 + -3r = 4 Add '-7' to each side of the equation. 7 + -7 + -3r = 4 + -7 Combine like terms: 7 + -7 = 0 0 + -3r = 4 + -7 -3r = 4 + -7 Combine like terms: 4 + -7 = -3 -3r = -3 Divide each side by '-3'. r = 1 Simplifying r = 1
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