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Simplifying 7a + 30 = 4a + 63 Reorder the terms: 30 + 7a = 4a + 63 Reorder the terms: 30 + 7a = 63 + 4a Solving 30 + 7a = 63 + 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. 30 + 7a + -4a = 63 + 4a + -4a Combine like terms: 7a + -4a = 3a 30 + 3a = 63 + 4a + -4a Combine like terms: 4a + -4a = 0 30 + 3a = 63 + 0 30 + 3a = 63 Add '-30' to each side of the equation. 30 + -30 + 3a = 63 + -30 Combine like terms: 30 + -30 = 0 0 + 3a = 63 + -30 3a = 63 + -30 Combine like terms: 63 + -30 = 33 3a = 33 Divide each side by '3'. a = 11 Simplifying a = 11
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