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Simplifying 40 + 2r = -4(1 + -6r) 40 + 2r = (1 * -4 + -6r * -4) 40 + 2r = (-4 + 24r) Solving 40 + 2r = -4 + 24r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-24r' to each side of the equation. 40 + 2r + -24r = -4 + 24r + -24r Combine like terms: 2r + -24r = -22r 40 + -22r = -4 + 24r + -24r Combine like terms: 24r + -24r = 0 40 + -22r = -4 + 0 40 + -22r = -4 Add '-40' to each side of the equation. 40 + -40 + -22r = -4 + -40 Combine like terms: 40 + -40 = 0 0 + -22r = -4 + -40 -22r = -4 + -40 Combine like terms: -4 + -40 = -44 -22r = -44 Divide each side by '-22'. r = 2 Simplifying r = 2
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