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Simplifying 4r(2) = r + -10 Reorder the terms for easier multiplication: 4 * 2r = r + -10 Multiply 4 * 2 8r = r + -10 Reorder the terms: 8r = -10 + r Solving 8r = -10 + r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-1r' to each side of the equation. 8r + -1r = -10 + r + -1r Combine like terms: 8r + -1r = 7r 7r = -10 + r + -1r Combine like terms: r + -1r = 0 7r = -10 + 0 7r = -10 Divide each side by '7'. r = -1.428571429 Simplifying r = -1.428571429
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