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Simplifying 19 + -12 + 6r + -2r = 0 Combine like terms: 19 + -12 = 7 7 + 6r + -2r = 0 Combine like terms: 6r + -2r = 4r 7 + 4r = 0 Solving 7 + 4r = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + 4r = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 4r = 0 + -7 4r = 0 + -7 Combine like terms: 0 + -7 = -7 4r = -7 Divide each side by '4'. r = -1.75 Simplifying r = -1.75
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