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Simplifying 7b(a + -4) + -3(a + -4) = 0 Reorder the terms: 7b(-4 + a) + -3(a + -4) = 0 (-4 * 7b + a * 7b) + -3(a + -4) = 0 Reorder the terms: (7ab + -28b) + -3(a + -4) = 0 (7ab + -28b) + -3(a + -4) = 0 Reorder the terms: 7ab + -28b + -3(-4 + a) = 0 7ab + -28b + (-4 * -3 + a * -3) = 0 7ab + -28b + (12 + -3a) = 0 Reorder the terms: 12 + -3a + 7ab + -28b = 0 Solving 12 + -3a + 7ab + -28b = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -3a + 7ab + -12 + -28b = 0 + -12 Reorder the terms: 12 + -12 + -3a + 7ab + -28b = 0 + -12 Combine like terms: 12 + -12 = 0 0 + -3a + 7ab + -28b = 0 + -12 -3a + 7ab + -28b = 0 + -12 Combine like terms: 0 + -12 = -12 -3a + 7ab + -28b = -12 Add '28b' to each side of the equation. -3a + 7ab + -28b + 28b = -12 + 28b Combine like terms: -28b + 28b = 0 -3a + 7ab + 0 = -12 + 28b -3a + 7ab = -12 + 28b Reorder the terms: 12 + -3a + 7ab + -28b = -12 + 28b + 12 + -28b Reorder the terms: 12 + -3a + 7ab + -28b = -12 + 12 + 28b + -28b Combine like terms: -12 + 12 = 0 12 + -3a + 7ab + -28b = 0 + 28b + -28b 12 + -3a + 7ab + -28b = 28b + -28b Combine like terms: 28b + -28b = 0 12 + -3a + 7ab + -28b = 0 The solution to this equation could not be determined.
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