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Simplifying A2 + -7a = (-12) A2 + -7a = -12 Solving A2 + -7a = -12 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. A2 + -7a + 7a = -12 + 7a Combine like terms: -7a + 7a = 0 A2 + 0 = -12 + 7a A2 = -12 + 7a Simplifying A2 = -12 + 7a Reorder the terms: 12 + A2 + -7a = -12 + 7a + 12 + -7a Reorder the terms: 12 + A2 + -7a = -12 + 12 + 7a + -7a Combine like terms: -12 + 12 = 0 12 + A2 + -7a = 0 + 7a + -7a 12 + A2 + -7a = 7a + -7a Combine like terms: 7a + -7a = 0 12 + A2 + -7a = 0 The solution to this equation could not be determined.
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