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Simplifying -7 + -2r = -3r Solving -7 + -2r = -3r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '3r' to each side of the equation. -7 + -2r + 3r = -3r + 3r Combine like terms: -2r + 3r = 1r -7 + 1r = -3r + 3r Combine like terms: -3r + 3r = 0 -7 + 1r = 0 Add '7' to each side of the equation. -7 + 7 + 1r = 0 + 7 Combine like terms: -7 + 7 = 0 0 + 1r = 0 + 7 1r = 0 + 7 Combine like terms: 0 + 7 = 7 1r = 7 Divide each side by '1'. r = 7 Simplifying r = 7
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