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Simplifying 3r + -26 = -42 + 7r Reorder the terms: -26 + 3r = -42 + 7r Solving -26 + 3r = -42 + 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. -26 + 3r + -7r = -42 + 7r + -7r Combine like terms: 3r + -7r = -4r -26 + -4r = -42 + 7r + -7r Combine like terms: 7r + -7r = 0 -26 + -4r = -42 + 0 -26 + -4r = -42 Add '26' to each side of the equation. -26 + 26 + -4r = -42 + 26 Combine like terms: -26 + 26 = 0 0 + -4r = -42 + 26 -4r = -42 + 26 Combine like terms: -42 + 26 = -16 -4r = -16 Divide each side by '-4'. r = 4 Simplifying r = 4
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