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Simplifying -30 + 6r = -4(6 + -2r) -30 + 6r = (6 * -4 + -2r * -4) -30 + 6r = (-24 + 8r) Solving -30 + 6r = -24 + 8r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-8r' to each side of the equation. -30 + 6r + -8r = -24 + 8r + -8r Combine like terms: 6r + -8r = -2r -30 + -2r = -24 + 8r + -8r Combine like terms: 8r + -8r = 0 -30 + -2r = -24 + 0 -30 + -2r = -24 Add '30' to each side of the equation. -30 + 30 + -2r = -24 + 30 Combine like terms: -30 + 30 = 0 0 + -2r = -24 + 30 -2r = -24 + 30 Combine like terms: -24 + 30 = 6 -2r = 6 Divide each side by '-2'. r = -3 Simplifying r = -3
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