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Simplifying 7a + -2 = 4a + 19 Reorder the terms: -2 + 7a = 4a + 19 Reorder the terms: -2 + 7a = 19 + 4a Solving -2 + 7a = 19 + 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. -2 + 7a + -4a = 19 + 4a + -4a Combine like terms: 7a + -4a = 3a -2 + 3a = 19 + 4a + -4a Combine like terms: 4a + -4a = 0 -2 + 3a = 19 + 0 -2 + 3a = 19 Add '2' to each side of the equation. -2 + 2 + 3a = 19 + 2 Combine like terms: -2 + 2 = 0 0 + 3a = 19 + 2 3a = 19 + 2 Combine like terms: 19 + 2 = 21 3a = 21 Divide each side by '3'. a = 7 Simplifying a = 7
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