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Simplifying 49r + -42 = 68r + -99 Reorder the terms: -42 + 49r = 68r + -99 Reorder the terms: -42 + 49r = -99 + 68r Solving -42 + 49r = -99 + 68r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-68r' to each side of the equation. -42 + 49r + -68r = -99 + 68r + -68r Combine like terms: 49r + -68r = -19r -42 + -19r = -99 + 68r + -68r Combine like terms: 68r + -68r = 0 -42 + -19r = -99 + 0 -42 + -19r = -99 Add '42' to each side of the equation. -42 + 42 + -19r = -99 + 42 Combine like terms: -42 + 42 = 0 0 + -19r = -99 + 42 -19r = -99 + 42 Combine like terms: -99 + 42 = -57 -19r = -57 Divide each side by '-19'. r = 3 Simplifying r = 3
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