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Simplifying 7a + -2 = 7 + -2a Reorder the terms: -2 + 7a = 7 + -2a Solving -2 + 7a = 7 + -2a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '2a' to each side of the equation. -2 + 7a + 2a = 7 + -2a + 2a Combine like terms: 7a + 2a = 9a -2 + 9a = 7 + -2a + 2a Combine like terms: -2a + 2a = 0 -2 + 9a = 7 + 0 -2 + 9a = 7 Add '2' to each side of the equation. -2 + 2 + 9a = 7 + 2 Combine like terms: -2 + 2 = 0 0 + 9a = 7 + 2 9a = 7 + 2 Combine like terms: 7 + 2 = 9 9a = 9 Divide each side by '9'. a = 1 Simplifying a = 1
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