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Simplifying 2a + 5 = 4a + -15 Reorder the terms: 5 + 2a = 4a + -15 Reorder the terms: 5 + 2a = -15 + 4a Solving 5 + 2a = -15 + 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. 5 + 2a + -4a = -15 + 4a + -4a Combine like terms: 2a + -4a = -2a 5 + -2a = -15 + 4a + -4a Combine like terms: 4a + -4a = 0 5 + -2a = -15 + 0 5 + -2a = -15 Add '-5' to each side of the equation. 5 + -5 + -2a = -15 + -5 Combine like terms: 5 + -5 = 0 0 + -2a = -15 + -5 -2a = -15 + -5 Combine like terms: -15 + -5 = -20 -2a = -20 Divide each side by '-2'. a = 10 Simplifying a = 10
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