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Simplifying A2 + -21 = 4a Reorder the terms: -21 + A2 = 4a Solving -21 + A2 = 4a Solving for variable 'A'. Move all terms containing A to the left, all other terms to the right. Add '21' to each side of the equation. -21 + 21 + A2 = 21 + 4a Combine like terms: -21 + 21 = 0 0 + A2 = 21 + 4a A2 = 21 + 4a Simplifying A2 = 21 + 4a Reorder the terms: -21 + A2 + -4a = 21 + 4a + -21 + -4a Reorder the terms: -21 + A2 + -4a = 21 + -21 + 4a + -4a Combine like terms: 21 + -21 = 0 -21 + A2 + -4a = 0 + 4a + -4a -21 + A2 + -4a = 4a + -4a Combine like terms: 4a + -4a = 0 -21 + A2 + -4a = 0 The solution to this equation could not be determined.
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