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Simplifying 7a + -4 = 3a + -12 Reorder the terms: -4 + 7a = 3a + -12 Reorder the terms: -4 + 7a = -12 + 3a Solving -4 + 7a = -12 + 3a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-3a' to each side of the equation. -4 + 7a + -3a = -12 + 3a + -3a Combine like terms: 7a + -3a = 4a -4 + 4a = -12 + 3a + -3a Combine like terms: 3a + -3a = 0 -4 + 4a = -12 + 0 -4 + 4a = -12 Add '4' to each side of the equation. -4 + 4 + 4a = -12 + 4 Combine like terms: -4 + 4 = 0 0 + 4a = -12 + 4 4a = -12 + 4 Combine like terms: -12 + 4 = -8 4a = -8 Divide each side by '4'. a = -2 Simplifying a = -2
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