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Simplifying 7a + -1 = 4a + 5 Reorder the terms: -1 + 7a = 4a + 5 Reorder the terms: -1 + 7a = 5 + 4a Solving -1 + 7a = 5 + 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. -1 + 7a + -4a = 5 + 4a + -4a Combine like terms: 7a + -4a = 3a -1 + 3a = 5 + 4a + -4a Combine like terms: 4a + -4a = 0 -1 + 3a = 5 + 0 -1 + 3a = 5 Add '1' to each side of the equation. -1 + 1 + 3a = 5 + 1 Combine like terms: -1 + 1 = 0 0 + 3a = 5 + 1 3a = 5 + 1 Combine like terms: 5 + 1 = 6 3a = 6 Divide each side by '3'. a = 2 Simplifying a = 2
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