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Simplifying 4r + 20 = 6r + -30 Reorder the terms: 20 + 4r = 6r + -30 Reorder the terms: 20 + 4r = -30 + 6r Solving 20 + 4r = -30 + 6r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-6r' to each side of the equation. 20 + 4r + -6r = -30 + 6r + -6r Combine like terms: 4r + -6r = -2r 20 + -2r = -30 + 6r + -6r Combine like terms: 6r + -6r = 0 20 + -2r = -30 + 0 20 + -2r = -30 Add '-20' to each side of the equation. 20 + -20 + -2r = -30 + -20 Combine like terms: 20 + -20 = 0 0 + -2r = -30 + -20 -2r = -30 + -20 Combine like terms: -30 + -20 = -50 -2r = -50 Divide each side by '-2'. r = 25 Simplifying r = 25
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