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Simplifying 10r + 2.70 = 12r Reorder the terms: 2.70 + 10r = 12r Solving 2.70 + 10r = 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. 2.70 + 10r + -12r = 12r + -12r Combine like terms: 10r + -12r = -2r 2.70 + -2r = 12r + -12r Combine like terms: 12r + -12r = 0 2.70 + -2r = 0 Add '-2.70' to each side of the equation. 2.70 + -2.70 + -2r = 0 + -2.70 Combine like terms: 2.70 + -2.70 = 0.00 0.00 + -2r = 0 + -2.70 -2r = 0 + -2.70 Combine like terms: 0 + -2.70 = -2.7 -2r = -2.7 Divide each side by '-2'. r = 1.35 Simplifying r = 1.35
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