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Simplifying 6.4 + -7 + -2.9r = 0 Combine like terms: 6.4 + -7 = -0.6 -0.6 + -2.9r = 0 Solving -0.6 + -2.9r = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '0.6' to each side of the equation. -0.6 + 0.6 + -2.9r = 0 + 0.6 Combine like terms: -0.6 + 0.6 = 0.0 0.0 + -2.9r = 0 + 0.6 -2.9r = 0 + 0.6 Combine like terms: 0 + 0.6 = 0.6 -2.9r = 0.6 Divide each side by '-2.9'. r = -0.2068965517 Simplifying r = -0.2068965517
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