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Simplifying 24 + -7r = 21 Solving 24 + -7r = 21 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-24' to each side of the equation. 24 + -24 + -7r = 21 + -24 Combine like terms: 24 + -24 = 0 0 + -7r = 21 + -24 -7r = 21 + -24 Combine like terms: 21 + -24 = -3 -7r = -3 Divide each side by '-7'. r = 0.4285714286 Simplifying r = 0.4285714286
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