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Simplifying 5r + 4 = 130 + -16r Reorder the terms: 4 + 5r = 130 + -16r Solving 4 + 5r = 130 + -16r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '16r' to each side of the equation. 4 + 5r + 16r = 130 + -16r + 16r Combine like terms: 5r + 16r = 21r 4 + 21r = 130 + -16r + 16r Combine like terms: -16r + 16r = 0 4 + 21r = 130 + 0 4 + 21r = 130 Add '-4' to each side of the equation. 4 + -4 + 21r = 130 + -4 Combine like terms: 4 + -4 = 0 0 + 21r = 130 + -4 21r = 130 + -4 Combine like terms: 130 + -4 = 126 21r = 126 Divide each side by '21'. r = 6 Simplifying r = 6
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