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Simplifying 7(2l + 9) = 189 Reorder the terms: 7(9 + 2l) = 189 (9 * 7 + 2l * 7) = 189 (63 + 14l) = 189 Solving 63 + 14l = 189 Solving for variable 'l'. Move all terms containing l to the left, all other terms to the right. Add '-63' to each side of the equation. 63 + -63 + 14l = 189 + -63 Combine like terms: 63 + -63 = 0 0 + 14l = 189 + -63 14l = 189 + -63 Combine like terms: 189 + -63 = 126 14l = 126 Divide each side by '14'. l = 9 Simplifying l = 9
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