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Simplifying 3 + -7a = -9 + 4a + 3 Reorder the terms: 3 + -7a = -9 + 3 + 4a Combine like terms: -9 + 3 = -6 3 + -7a = -6 + 4a Solving 3 + -7a = -6 + 4a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-4a' to each side of the equation. 3 + -7a + -4a = -6 + 4a + -4a Combine like terms: -7a + -4a = -11a 3 + -11a = -6 + 4a + -4a Combine like terms: 4a + -4a = 0 3 + -11a = -6 + 0 3 + -11a = -6 Add '-3' to each side of the equation. 3 + -3 + -11a = -6 + -3 Combine like terms: 3 + -3 = 0 0 + -11a = -6 + -3 -11a = -6 + -3 Combine like terms: -6 + -3 = -9 -11a = -9 Divide each side by '-11'. a = 0.8181818182 Simplifying a = 0.8181818182
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