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Simplifying 3r + 2(r + -4) = 22 Reorder the terms: 3r + 2(-4 + r) = 22 3r + (-4 * 2 + r * 2) = 22 3r + (-8 + 2r) = 22 Reorder the terms: -8 + 3r + 2r = 22 Combine like terms: 3r + 2r = 5r -8 + 5r = 22 Solving -8 + 5r = 22 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + 5r = 22 + 8 Combine like terms: -8 + 8 = 0 0 + 5r = 22 + 8 5r = 22 + 8 Combine like terms: 22 + 8 = 30 5r = 30 Divide each side by '5'. r = 6 Simplifying r = 6
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