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Simplifying 5r + 7s = 15fors Solving 5r + 7s = 15fors Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-15fors' to each side of the equation. 5r + -15fors + 7s = 15fors + -15fors Reorder the terms: -15fors + 5r + 7s = 15fors + -15fors Combine like terms: 15fors + -15fors = 0 -15fors + 5r + 7s = 0 Add '-7s' to each side of the equation. -15fors + 5r + 7s + -7s = 0 + -7s Combine like terms: 7s + -7s = 0 -15fors + 5r + 0 = 0 + -7s -15fors + 5r = 0 + -7s Remove the zero: -15fors + 5r = -7s Combine like terms: -7s + 7s = 0 -15fors + 5r + 7s = 0 The solution to this equation could not be determined.
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