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Simplifying 3r2 + 21 + 36 = 4 Reorder the terms: 21 + 36 + 3r2 = 4 Combine like terms: 21 + 36 = 57 57 + 3r2 = 4 Solving 57 + 3r2 = 4 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-57' to each side of the equation. 57 + -57 + 3r2 = 4 + -57 Combine like terms: 57 + -57 = 0 0 + 3r2 = 4 + -57 3r2 = 4 + -57 Combine like terms: 4 + -57 = -53 3r2 = -53 Divide each side by '3'. r2 = -17.66666667 Simplifying r2 = -17.66666667 Reorder the terms: 17.66666667 + r2 = -17.66666667 + 17.66666667 Combine like terms: -17.66666667 + 17.66666667 = 0.00000000 17.66666667 + r2 = 0.00000000 The solution to this equation could not be determined.
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