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Simplifying 4 + -2a + 3 + 2a = 2a + 3 Reorder the terms: 4 + 3 + -2a + 2a = 2a + 3 Combine like terms: 4 + 3 = 7 7 + -2a + 2a = 2a + 3 Combine like terms: -2a + 2a = 0 7 + 0 = 2a + 3 7 = 2a + 3 Reorder the terms: 7 = 3 + 2a Solving 7 = 3 + 2a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-2a' to each side of the equation. 7 + -2a = 3 + 2a + -2a Combine like terms: 2a + -2a = 0 7 + -2a = 3 + 0 7 + -2a = 3 Add '-7' to each side of the equation. 7 + -7 + -2a = 3 + -7 Combine like terms: 7 + -7 = 0 0 + -2a = 3 + -7 -2a = 3 + -7 Combine like terms: 3 + -7 = -4 -2a = -4 Divide each side by '-2'. a = 2 Simplifying a = 2
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