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Simplifying 13 = -7b + -6b Combine like terms: -7b + -6b = -13b 13 = -13b Solving 13 = -13b Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '13b' to each side of the equation. 13 + 13b = -13b + 13b Combine like terms: -13b + 13b = 0 13 + 13b = 0 Add '-13' to each side of the equation. 13 + -13 + 13b = 0 + -13 Combine like terms: 13 + -13 = 0 0 + 13b = 0 + -13 13b = 0 + -13 Combine like terms: 0 + -13 = -13 13b = -13 Divide each side by '13'. b = -1 Simplifying b = -1
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