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Simplifying 26 + 4r = -3(4 + 5r) 26 + 4r = (4 * -3 + 5r * -3) 26 + 4r = (-12 + -15r) Solving 26 + 4r = -12 + -15r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '15r' to each side of the equation. 26 + 4r + 15r = -12 + -15r + 15r Combine like terms: 4r + 15r = 19r 26 + 19r = -12 + -15r + 15r Combine like terms: -15r + 15r = 0 26 + 19r = -12 + 0 26 + 19r = -12 Add '-26' to each side of the equation. 26 + -26 + 19r = -12 + -26 Combine like terms: 26 + -26 = 0 0 + 19r = -12 + -26 19r = -12 + -26 Combine like terms: -12 + -26 = -38 19r = -38 Divide each side by '19'. r = -2 Simplifying r = -2
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