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Simplifying 2a + -4 + 2 = 4a + 18 Reorder the terms: -4 + 2 + 2a = 4a + 18 Combine like terms: -4 + 2 = -2 -2 + 2a = 4a + 18 Reorder the terms: -2 + 2a = 18 + 4a Solving -2 + 2a = 18 + 4a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-4a' to each side of the equation. -2 + 2a + -4a = 18 + 4a + -4a Combine like terms: 2a + -4a = -2a -2 + -2a = 18 + 4a + -4a Combine like terms: 4a + -4a = 0 -2 + -2a = 18 + 0 -2 + -2a = 18 Add '2' to each side of the equation. -2 + 2 + -2a = 18 + 2 Combine like terms: -2 + 2 = 0 0 + -2a = 18 + 2 -2a = 18 + 2 Combine like terms: 18 + 2 = 20 -2a = 20 Divide each side by '-2'. a = -10 Simplifying a = -10
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