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Simplifying 3(2a + 1) * 7 = 50 Reorder the terms: 3(1 + 2a) * 7 = 50 Reorder the terms for easier multiplication: 3 * 7(1 + 2a) = 50 Multiply 3 * 7 21(1 + 2a) = 50 (1 * 21 + 2a * 21) = 50 (21 + 42a) = 50 Solving 21 + 42a = 50 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-21' to each side of the equation. 21 + -21 + 42a = 50 + -21 Combine like terms: 21 + -21 = 0 0 + 42a = 50 + -21 42a = 50 + -21 Combine like terms: 50 + -21 = 29 42a = 29 Divide each side by '42'. a = 0.6904761905 Simplifying a = 0.6904761905
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