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Simplifying 7(5r + 3) = -154 Reorder the terms: 7(3 + 5r) = -154 (3 * 7 + 5r * 7) = -154 (21 + 35r) = -154 Solving 21 + 35r = -154 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-21' to each side of the equation. 21 + -21 + 35r = -154 + -21 Combine like terms: 21 + -21 = 0 0 + 35r = -154 + -21 35r = -154 + -21 Combine like terms: -154 + -21 = -175 35r = -175 Divide each side by '35'. r = -5 Simplifying r = -5
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