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Simplifying 2a + -4 = 7 + a Reorder the terms: -4 + 2a = 7 + a Solving -4 + 2a = 7 + a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-1a' to each side of the equation. -4 + 2a + -1a = 7 + a + -1a Combine like terms: 2a + -1a = 1a -4 + 1a = 7 + a + -1a Combine like terms: a + -1a = 0 -4 + 1a = 7 + 0 -4 + 1a = 7 Add '4' to each side of the equation. -4 + 4 + 1a = 7 + 4 Combine like terms: -4 + 4 = 0 0 + 1a = 7 + 4 1a = 7 + 4 Combine like terms: 7 + 4 = 11 1a = 11 Divide each side by '1'. a = 11 Simplifying a = 11
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