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Simplifying -7.5r + 2 = -28 Reorder the terms: 2 + -7.5r = -28 Solving 2 + -7.5r = -28 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -7.5r = -28 + -2 Combine like terms: 2 + -2 = 0 0 + -7.5r = -28 + -2 -7.5r = -28 + -2 Combine like terms: -28 + -2 = -30 -7.5r = -30 Divide each side by '-7.5'. r = 4 Simplifying r = 4
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