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Simplifying 7 + -1r + 4 = 0 Reorder the terms: 7 + 4 + -1r = 0 Combine like terms: 7 + 4 = 11 11 + -1r = 0 Solving 11 + -1r = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-11' to each side of the equation. 11 + -11 + -1r = 0 + -11 Combine like terms: 11 + -11 = 0 0 + -1r = 0 + -11 -1r = 0 + -11 Combine like terms: 0 + -11 = -11 -1r = -11 Divide each side by '-1'. r = 11 Simplifying r = 11
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