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Simplifying 2 = -7 + r Solving 2 = -7 + r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-1r' to each side of the equation. 2 + -1r = -7 + r + -1r Combine like terms: r + -1r = 0 2 + -1r = -7 + 0 2 + -1r = -7 Add '-2' to each side of the equation. 2 + -2 + -1r = -7 + -2 Combine like terms: 2 + -2 = 0 0 + -1r = -7 + -2 -1r = -7 + -2 Combine like terms: -7 + -2 = -9 -1r = -9 Divide each side by '-1'. r = 9 Simplifying r = 9
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