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Simplifying 3 + 8b = -4.2 Solving 3 + 8b = -4.2 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + 8b = -4.2 + -3 Combine like terms: 3 + -3 = 0 0 + 8b = -4.2 + -3 8b = -4.2 + -3 Combine like terms: -4.2 + -3 = -7.2 8b = -7.2 Divide each side by '8'. b = -0.9 Simplifying b = -0.9
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