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Simplifying -5(9r + 7) = 56 Reorder the terms: -5(7 + 9r) = 56 (7 * -5 + 9r * -5) = 56 (-35 + -45r) = 56 Solving -35 + -45r = 56 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '35' to each side of the equation. -35 + 35 + -45r = 56 + 35 Combine like terms: -35 + 35 = 0 0 + -45r = 56 + 35 -45r = 56 + 35 Combine like terms: 56 + 35 = 91 -45r = 91 Divide each side by '-45'. r = -2.022222222 Simplifying r = -2.022222222
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