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Simplifying 7a = 3(a + -4) Reorder the terms: 7a = 3(-4 + a) 7a = (-4 * 3 + a * 3) 7a = (-12 + 3a) Solving 7a = -12 + 3a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-3a' to each side of the equation. 7a + -3a = -12 + 3a + -3a Combine like terms: 7a + -3a = 4a 4a = -12 + 3a + -3a Combine like terms: 3a + -3a = 0 4a = -12 + 0 4a = -12 Divide each side by '4'. a = -3 Simplifying a = -3
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