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Simplifying -98 = -7(6 + -1r) -98 = (6 * -7 + -1r * -7) -98 = (-42 + 7r) Solving -98 = -42 + 7r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-7r' to each side of the equation. -98 + -7r = -42 + 7r + -7r Combine like terms: 7r + -7r = 0 -98 + -7r = -42 + 0 -98 + -7r = -42 Add '98' to each side of the equation. -98 + 98 + -7r = -42 + 98 Combine like terms: -98 + 98 = 0 0 + -7r = -42 + 98 -7r = -42 + 98 Combine like terms: -42 + 98 = 56 -7r = 56 Divide each side by '-7'. r = -8 Simplifying r = -8
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