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Simplifying 2a + -7 = -2a + 5 Reorder the terms: -7 + 2a = -2a + 5 Reorder the terms: -7 + 2a = 5 + -2a Solving -7 + 2a = 5 + -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. -7 + 2a + 2a = 5 + -2a + 2a Combine like terms: 2a + 2a = 4a -7 + 4a = 5 + -2a + 2a Combine like terms: -2a + 2a = 0 -7 + 4a = 5 + 0 -7 + 4a = 5 Add '7' to each side of the equation. -7 + 7 + 4a = 5 + 7 Combine like terms: -7 + 7 = 0 0 + 4a = 5 + 7 4a = 5 + 7 Combine like terms: 5 + 7 = 12 4a = 12 Divide each side by '4'. a = 3 Simplifying a = 3
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