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Simplifying 16x2 + -16r + -77 = 0 Reorder the terms: -77 + -16r + 16x2 = 0 Solving -77 + -16r + 16x2 = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '77' to each side of the equation. -77 + -16r + 77 + 16x2 = 0 + 77 Reorder the terms: -77 + 77 + -16r + 16x2 = 0 + 77 Combine like terms: -77 + 77 = 0 0 + -16r + 16x2 = 0 + 77 -16r + 16x2 = 0 + 77 Combine like terms: 0 + 77 = 77 -16r + 16x2 = 77 Add '-16x2' to each side of the equation. -16r + 16x2 + -16x2 = 77 + -16x2 Combine like terms: 16x2 + -16x2 = 0 -16r + 0 = 77 + -16x2 -16r = 77 + -16x2 Divide each side by '-16'. r = -4.8125 + x2 Simplifying r = -4.8125 + x2
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