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Simplifying -2 = -7(4a + 7) Reorder the terms: -2 = -7(7 + 4a) -2 = (7 * -7 + 4a * -7) -2 = (-49 + -28a) Solving -2 = -49 + -28a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '28a' to each side of the equation. -2 + 28a = -49 + -28a + 28a Combine like terms: -28a + 28a = 0 -2 + 28a = -49 + 0 -2 + 28a = -49 Add '2' to each side of the equation. -2 + 2 + 28a = -49 + 2 Combine like terms: -2 + 2 = 0 0 + 28a = -49 + 2 28a = -49 + 2 Combine like terms: -49 + 2 = -47 28a = -47 Divide each side by '28'. a = -1.678571429 Simplifying a = -1.678571429
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