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Simplifying 7b + -1(2b + -7) = 0 Reorder the terms: 7b + -1(-7 + 2b) = 0 7b + (-7 * -1 + 2b * -1) = 0 7b + (7 + -2b) = 0 Reorder the terms: 7 + 7b + -2b = 0 Combine like terms: 7b + -2b = 5b 7 + 5b = 0 Solving 7 + 5b = 0 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + 5b = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 5b = 0 + -7 5b = 0 + -7 Combine like terms: 0 + -7 = -7 5b = -7 Divide each side by '5'. b = -1.4 Simplifying b = -1.4
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