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Simplifying -19r + 13 = 4 + -16r Reorder the terms: 13 + -19r = 4 + -16r Solving 13 + -19r = 4 + -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. 13 + -19r + 16r = 4 + -16r + 16r Combine like terms: -19r + 16r = -3r 13 + -3r = 4 + -16r + 16r Combine like terms: -16r + 16r = 0 13 + -3r = 4 + 0 13 + -3r = 4 Add '-13' to each side of the equation. 13 + -13 + -3r = 4 + -13 Combine like terms: 13 + -13 = 0 0 + -3r = 4 + -13 -3r = 4 + -13 Combine like terms: 4 + -13 = -9 -3r = -9 Divide each side by '-3'. r = 3 Simplifying r = 3
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