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Simplifying 7.9 = 15.9 + 4b Solving 7.9 = 15.9 + 4b Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-4b' to each side of the equation. 7.9 + -4b = 15.9 + 4b + -4b Combine like terms: 4b + -4b = 0 7.9 + -4b = 15.9 + 0 7.9 + -4b = 15.9 Add '-7.9' to each side of the equation. 7.9 + -7.9 + -4b = 15.9 + -7.9 Combine like terms: 7.9 + -7.9 = 0.0 0.0 + -4b = 15.9 + -7.9 -4b = 15.9 + -7.9 Combine like terms: 15.9 + -7.9 = 8 -4b = 8 Divide each side by '-4'. b = -2 Simplifying b = -2
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