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Simplifying 7a + 13 = 2a + -15 Reorder the terms: 13 + 7a = 2a + -15 Reorder the terms: 13 + 7a = -15 + 2a Solving 13 + 7a = -15 + 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. 13 + 7a + -2a = -15 + 2a + -2a Combine like terms: 7a + -2a = 5a 13 + 5a = -15 + 2a + -2a Combine like terms: 2a + -2a = 0 13 + 5a = -15 + 0 13 + 5a = -15 Add '-13' to each side of the equation. 13 + -13 + 5a = -15 + -13 Combine like terms: 13 + -13 = 0 0 + 5a = -15 + -13 5a = -15 + -13 Combine like terms: -15 + -13 = -28 5a = -28 Divide each side by '5'. a = -5.6 Simplifying a = -5.6
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