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Simplifying -1f + -13 + 15f = 71 Reorder the terms: -13 + -1f + 15f = 71 Combine like terms: -1f + 15f = 14f -13 + 14f = 71 Solving -13 + 14f = 71 Solving for variable 'f'. Move all terms containing f to the left, all other terms to the right. Add '13' to each side of the equation. -13 + 13 + 14f = 71 + 13 Combine like terms: -13 + 13 = 0 0 + 14f = 71 + 13 14f = 71 + 13 Combine like terms: 71 + 13 = 84 14f = 84 Divide each side by '14'. f = 6 Simplifying f = 6
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