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Simplifying 2(-7a + 9) = -16 + -7a Reorder the terms: 2(9 + -7a) = -16 + -7a (9 * 2 + -7a * 2) = -16 + -7a (18 + -14a) = -16 + -7a Solving 18 + -14a = -16 + -7a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '7a' to each side of the equation. 18 + -14a + 7a = -16 + -7a + 7a Combine like terms: -14a + 7a = -7a 18 + -7a = -16 + -7a + 7a Combine like terms: -7a + 7a = 0 18 + -7a = -16 + 0 18 + -7a = -16 Add '-18' to each side of the equation. 18 + -18 + -7a = -16 + -18 Combine like terms: 18 + -18 = 0 0 + -7a = -16 + -18 -7a = -16 + -18 Combine like terms: -16 + -18 = -34 -7a = -34 Divide each side by '-7'. a = 4.857142857 Simplifying a = 4.857142857
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