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Simplifying -4 = r20 + -5 Reorder the terms: -4 = -5 + r20 Solving -4 = -5 + r20 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-1r20' to each side of the equation. -4 + -1r20 = -5 + r20 + -1r20 Combine like terms: r20 + -1r20 = 0 -4 + -1r20 = -5 + 0 -4 + -1r20 = -5 Add '4' to each side of the equation. -4 + 4 + -1r20 = -5 + 4 Combine like terms: -4 + 4 = 0 0 + -1r20 = -5 + 4 -1r20 = -5 + 4 Combine like terms: -5 + 4 = -1 -1r20 = -1 Divide each side by '-1'. r20 = 1 Simplifying r20 = 1 Reorder the terms: -1 + r20 = 1 + -1 Combine like terms: 1 + -1 = 0 -1 + r20 = 0 Factor a difference between two squares. (1 + r10)(-1 + r10) = 0 Factor a difference between two squares. (1 + r10)((1 + r5)(-1 + r5)) = 0Subproblem 1
Set the factor '(1 + r10)' equal to zero and attempt to solve: Simplifying 1 + r10 = 0 Solving 1 + r10 = 0 Move all terms containing r to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + r10 = 0 + -1 Combine like terms: 1 + -1 = 0 0 + r10 = 0 + -1 r10 = 0 + -1 Combine like terms: 0 + -1 = -1 r10 = -1 Simplifying r10 = -1 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.Subproblem 2
Set the factor '(1 + r5)' equal to zero and attempt to solve: Simplifying 1 + r5 = 0 Solving 1 + r5 = 0 Move all terms containing r to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + r5 = 0 + -1 Combine like terms: 1 + -1 = 0 0 + r5 = 0 + -1 r5 = 0 + -1 Combine like terms: 0 + -1 = -1 r5 = -1 Simplifying r5 = -1 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.Subproblem 3
Set the factor '(-1 + r5)' equal to zero and attempt to solve: Simplifying -1 + r5 = 0 Solving -1 + r5 = 0 Move all terms containing r to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + r5 = 0 + 1 Combine like terms: -1 + 1 = 0 0 + r5 = 0 + 1 r5 = 0 + 1 Combine like terms: 0 + 1 = 1 r5 = 1 Simplifying r5 = 1 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.
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