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Simplifying -2 + 7b = 4 + 9b Solving -2 + 7b = 4 + 9b Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-9b' to each side of the equation. -2 + 7b + -9b = 4 + 9b + -9b Combine like terms: 7b + -9b = -2b -2 + -2b = 4 + 9b + -9b Combine like terms: 9b + -9b = 0 -2 + -2b = 4 + 0 -2 + -2b = 4 Add '2' to each side of the equation. -2 + 2 + -2b = 4 + 2 Combine like terms: -2 + 2 = 0 0 + -2b = 4 + 2 -2b = 4 + 2 Combine like terms: 4 + 2 = 6 -2b = 6 Divide each side by '-2'. b = -3 Simplifying b = -3
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