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Simplifying -8 = 4r + -7 + 6r + 2r Reorder the terms: -8 = -7 + 4r + 6r + 2r Combine like terms: 4r + 6r = 10r -8 = -7 + 10r + 2r Combine like terms: 10r + 2r = 12r -8 = -7 + 12r Solving -8 = -7 + 12r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-12r' to each side of the equation. -8 + -12r = -7 + 12r + -12r Combine like terms: 12r + -12r = 0 -8 + -12r = -7 + 0 -8 + -12r = -7 Add '8' to each side of the equation. -8 + 8 + -12r = -7 + 8 Combine like terms: -8 + 8 = 0 0 + -12r = -7 + 8 -12r = -7 + 8 Combine like terms: -7 + 8 = 1 -12r = 1 Divide each side by '-12'. r = -0.08333333333 Simplifying r = -0.08333333333
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