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Simplifying -8u + 20 = -2(4u + -10) Reorder the terms: 20 + -8u = -2(4u + -10) Reorder the terms: 20 + -8u = -2(-10 + 4u) 20 + -8u = (-10 * -2 + 4u * -2) 20 + -8u = (20 + -8u) Add '-20' to each side of the equation. 20 + -20 + -8u = 20 + -20 + -8u Combine like terms: 20 + -20 = 0 0 + -8u = 20 + -20 + -8u -8u = 20 + -20 + -8u Combine like terms: 20 + -20 = 0 -8u = 0 + -8u -8u = -8u Add '8u' to each side of the equation. -8u + 8u = -8u + 8u Combine like terms: -8u + 8u = 0 0 = -8u + 8u Combine like terms: -8u + 8u = 0 0 = 0 Solving 0 = 0 Couldn't find a variable to solve for. This equation is an identity, all real numbers are solutions.
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