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Simplifying 7.8 + -11r = -6.2 + -1r Solving 7.8 + -11r = -6.2 + -1r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add 'r' to each side of the equation. 7.8 + -11r + r = -6.2 + -1r + r Combine like terms: -11r + r = -10r 7.8 + -10r = -6.2 + -1r + r Combine like terms: -1r + r = 0 7.8 + -10r = -6.2 + 0 7.8 + -10r = -6.2 Add '-7.8' to each side of the equation. 7.8 + -7.8 + -10r = -6.2 + -7.8 Combine like terms: 7.8 + -7.8 = 0.0 0.0 + -10r = -6.2 + -7.8 -10r = -6.2 + -7.8 Combine like terms: -6.2 + -7.8 = -14 -10r = -14 Divide each side by '-10'. r = 1.4 Simplifying r = 1.4
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