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Simplifying 4 = -2(-1) + b Multiply -2 * -1 4 = 2 + b Solving 4 = 2 + b Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-1b' to each side of the equation. 4 + -1b = 2 + b + -1b Combine like terms: b + -1b = 0 4 + -1b = 2 + 0 4 + -1b = 2 Add '-4' to each side of the equation. 4 + -4 + -1b = 2 + -4 Combine like terms: 4 + -4 = 0 0 + -1b = 2 + -4 -1b = 2 + -4 Combine like terms: 2 + -4 = -2 -1b = -2 Divide each side by '-1'. b = 2 Simplifying b = 2
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