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Simplifying 7a + -2(a + 1) = 17 Reorder the terms: 7a + -2(1 + a) = 17 7a + (1 * -2 + a * -2) = 17 7a + (-2 + -2a) = 17 Reorder the terms: -2 + 7a + -2a = 17 Combine like terms: 7a + -2a = 5a -2 + 5a = 17 Solving -2 + 5a = 17 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + 5a = 17 + 2 Combine like terms: -2 + 2 = 0 0 + 5a = 17 + 2 5a = 17 + 2 Combine like terms: 17 + 2 = 19 5a = 19 Divide each side by '5'. a = 3.8 Simplifying a = 3.8
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