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Simplifying -26r + 7 + -28r = 3(-4) Reorder the terms: 7 + -26r + -28r = 3(-4) Combine like terms: -26r + -28r = -54r 7 + -54r = 3(-4) Multiply 3 * -4 7 + -54r = -12 Solving 7 + -54r = -12 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -54r = -12 + -7 Combine like terms: 7 + -7 = 0 0 + -54r = -12 + -7 -54r = -12 + -7 Combine like terms: -12 + -7 = -19 -54r = -19 Divide each side by '-54'. r = 0.3518518519 Simplifying r = 0.3518518519
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