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Simplifying 2b + 5 + -7b = 15 Reorder the terms: 5 + 2b + -7b = 15 Combine like terms: 2b + -7b = -5b 5 + -5b = 15 Solving 5 + -5b = 15 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -5b = 15 + -5 Combine like terms: 5 + -5 = 0 0 + -5b = 15 + -5 -5b = 15 + -5 Combine like terms: 15 + -5 = 10 -5b = 10 Divide each side by '-5'. b = -2 Simplifying b = -2
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