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Simplifying a(7x + 3) = b + -21x Reorder the terms: a(3 + 7x) = b + -21x (3 * a + 7x * a) = b + -21x (3a + 7ax) = b + -21x Solving 3a + 7ax = b + -21x Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Reorder the terms: 3a + 7ax + -1b + 21x = b + -1b + -21x + 21x Combine like terms: b + -1b = 0 3a + 7ax + -1b + 21x = 0 + -21x + 21x 3a + 7ax + -1b + 21x = -21x + 21x Combine like terms: -21x + 21x = 0 3a + 7ax + -1b + 21x = 0 The solution to this equation could not be determined.
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