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Simplifying -4(4b + -2) + -5b = 155 Reorder the terms: -4(-2 + 4b) + -5b = 155 (-2 * -4 + 4b * -4) + -5b = 155 (8 + -16b) + -5b = 155 Combine like terms: -16b + -5b = -21b 8 + -21b = 155 Solving 8 + -21b = 155 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -21b = 155 + -8 Combine like terms: 8 + -8 = 0 0 + -21b = 155 + -8 -21b = 155 + -8 Combine like terms: 155 + -8 = 147 -21b = 147 Divide each side by '-21'. b = -7 Simplifying b = -7
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