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Simplifying 2a + 4b + 30 = 180 Reorder the terms: 30 + 2a + 4b = 180 Solving 30 + 2a + 4b = 180 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-30' to each side of the equation. 30 + 2a + -30 + 4b = 180 + -30 Reorder the terms: 30 + -30 + 2a + 4b = 180 + -30 Combine like terms: 30 + -30 = 0 0 + 2a + 4b = 180 + -30 2a + 4b = 180 + -30 Combine like terms: 180 + -30 = 150 2a + 4b = 150 Add '-4b' to each side of the equation. 2a + 4b + -4b = 150 + -4b Combine like terms: 4b + -4b = 0 2a + 0 = 150 + -4b 2a = 150 + -4b Divide each side by '2'. a = 75 + -2b Simplifying a = 75 + -2b
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