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Simplifying -16.128 = 2.1r + 1.74 Reorder the terms: -16.128 = 1.74 + 2.1r Solving -16.128 = 1.74 + 2.1r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-2.1r' to each side of the equation. -16.128 + -2.1r = 1.74 + 2.1r + -2.1r Combine like terms: 2.1r + -2.1r = 0.0 -16.128 + -2.1r = 1.74 + 0.0 -16.128 + -2.1r = 1.74 Add '16.128' to each side of the equation. -16.128 + 16.128 + -2.1r = 1.74 + 16.128 Combine like terms: -16.128 + 16.128 = 0.000 0.000 + -2.1r = 1.74 + 16.128 -2.1r = 1.74 + 16.128 Combine like terms: 1.74 + 16.128 = 17.868 -2.1r = 17.868 Divide each side by '-2.1'. r = -8.508571429 Simplifying r = -8.508571429
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