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Simplifying -8a + 3b = -21 Solving -8a + 3b = -21 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-3b' to each side of the equation. -8a + 3b + -3b = -21 + -3b Combine like terms: 3b + -3b = 0 -8a + 0 = -21 + -3b -8a = -21 + -3b Divide each side by '-8'. a = 2.625 + 0.375b Simplifying a = 2.625 + 0.375b
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