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Simplifying 12 = -4(-6r + -3) Reorder the terms: 12 = -4(-3 + -6r) 12 = (-3 * -4 + -6r * -4) 12 = (12 + 24r) Add '-12' to each side of the equation. 12 + -12 = 12 + -12 + 24r Combine like terms: 12 + -12 = 0 0 = 12 + -12 + 24r Combine like terms: 12 + -12 = 0 0 = 0 + 24r 0 = 24r Solving 0 = 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. 0 + -24r = 24r + -24r Remove the zero: -24r = 24r + -24r Combine like terms: 24r + -24r = 0 -24r = 0 Divide each side by '-24'. r = 0 Simplifying r = 0
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